Crispy Smashed Fingerling Potatoes with Rosemary

Last summer, I was hosting a small dinner party for six friends. I wanted to serve something that felt fancy but didn’t require me to stand over the stove for two hours. I had planned a complicated herb-crusted rack of lamb, which was going well, until I realized I had absolutely nothing to pair with it that would hold up to such a bold main. I panicked. I looked at my pantry, then at the clock, and decided to make the simplest thing I could think of: roasted potatoes.

But not just any potatoes. I grabbed some fingerlings from the farmer’s market, smashed them flat, tossed them with rosemary, garlic, and olive oil, and threw them in the oven. The smell that filled my kitchen was incredible. When they came out, they were golden, crispy on the outside, and fluffy on the inside. My guests didn’t even touch the lamb for the first ten minutes. They went straight for the potatoes. One friend literally asked for the recipe in text while we were still sitting at the table.

That was the moment I realized I had stumbled onto something special. These Crispy Smashed Fingerling Potatoes with Rosemary aren’t just a side dish; they are a game-changer. I’ve made them for weeknight dinners, holiday gatherings, and even as a snack with a dollop of sour cream. They are hands-down the best way to cook potatoes, and once you try this method, you’ll never go back to regular roasted wedges.

Here’s the thing about these smashed potatoes: they are deceptively simple. You boil them, smash them, and bake them. That’s it. But the result is restaurant-quality perfection. The edges get shatteringly crisp, while the centers stay creamy and soft. The rosemary adds an earthy, pine-like aroma that pairs perfectly with the garlic. I’ve tested this recipe dozens of times, tweaking the oil ratio and smashing technique, and I’m confident this is the ultimate version. You’ll make this on repeat.

Why You’ll Love This Recipe

There are about a million potato recipes out there, but these Crispy Smashed Fingerling Potatoes with Rosemary stand out for a few specific reasons. I’ve served this to picky eaters, food snobs, and my own family, and it always gets cleared off the plate. Here is why this recipe has earned a permanent spot in my weekly rotation:

• Maximum Crispiness — Boiling the potatoes first is the secret. It softens the surface so that when you smash them, you create more surface area for the oil to crisp up. The result is a potato that crunches when you bite into it, unlike regular roasted potatoes that can sometimes stay soggy in the middle.
• Minimal Effort — This isn’t a high-maintenance dish. It requires maybe 15 minutes of active prep time. The rest is just waiting in the oven. I can make this while I’m chopping vegetables for the main course or even helping my kids with homework. It fits into real life.
• Flavor Bomb — The combination of fresh rosemary, minced garlic, and sea salt is classic for a reason. It’s aromatic and savory without being heavy. The olive oil helps carry those flavors deep into the potato, so every bite is seasoned perfectly.
• Perfect for Any Occasion — Whether you’re serving these alongside 5-ingredient chicken nuggets for a casual Friday night or pairing them with a roast chicken for Sunday dinner, they fit in seamlessly. They are versatile enough to be a simple snack or a fancy appetizer.
• Budget-Friendly — Fingerling potatoes are affordable, especially when you buy them in bulk. This recipe feeds a crowd for a very low cost. It’s a great way to stretch a meal and make sure everyone leaves the table full.

I love that this recipe feels special without feeling like work. It’s the kind of dish that makes people ask, “How did you make these so good?” when the answer is really just “boil, smash, bake.” It’s satisfying to cook something that looks impressive but is actually foolproof.

Ingredients You’ll Need

One of the best parts about these Crispy Smashed Fingerling Potatoes with Rosemary is the short, simple ingredient list. You likely have most of this in your kitchen already. I’m particular about a few things here, and I’ll tell you exactly why they matter.

For the Potatoes

Fingerling potatoes (2 pounds / 900g) — This is non-negotiable if you want the best texture. Fingerlings are small, oblong, and have a waxy skin that holds together well during boiling and smashing. Russet potatoes can work, but they tend to fall apart and lose their shape. Yukon Golds are okay, but fingerlings give you that perfect bite-sized size. Look for potatoes that are all roughly the same size so they cook evenly.

For the Seasoning Oil

Extra virgin olive oil (3 tablespoons / 45ml) — Use good quality olive oil here. Since you aren’t cooking it at extremely high heat like frying, the flavor of the oil will come through. I use a mild extra virgin so it doesn’t overpower the rosemary. If you don’t have olive oil, melted butter works too, but olive oil gives a better crisp.

Garlic cloves (4-5 cloves, minced / about 1 tablespoon) — Fresh garlic is a must. Jarred garlic has a metallic taste that doesn’t work well with the delicate rosemary. Mince it finely so you get little bursts of flavor in every bite. If you’re sensitive to raw garlic, you can grate it instead of mincing it.

Fresh rosemary (2 tablespoons, chopped) — Fresh rosemary has a much brighter, piney flavor than dried. Dried rosemary can be woody and bitter if you use too much. If you only have dried, use 1 teaspoon, but fresh is worth the trip to the store or the herb garden. Chop it finely so it distributes evenly.

Sea salt (1 teaspoon, plus more for the boiling water) — Kosher salt or sea salt works best. I like to use flaky sea salt for finishing because it adds a nice crunch. Make sure to salt your boiling water heavily—it should taste like the ocean. This seasons the potato from the inside out.

Black pepper (½ teaspoon, freshly cracked) — Freshly cracked pepper adds a bit of heat and aroma. Pre-ground pepper loses its flavor quickly, so take the extra 30 seconds to grind it.

Optional Add-ins — I sometimes add a pinch of red pepper flakes for a little kick, or some grated Parmesan cheese right after they come out of the oven. But honestly, the basic rosemary-garlic version is perfect on its own.

Equipment Needed

You don’t need any fancy gadgets for this. Here’s what I actually use, along with some honest opinions on why.

A large pot — I use a 6-quart stockpot. You need enough water to cover the potatoes by an inch. A smaller pot will crowd the potatoes, and they won’t cook evenly.

A baking sheet — A standard 18×13 inch sheet pan works perfectly. I prefer non-stick or those with a light coating because it helps with cleanup, but a bare metal sheet works too if you use parchment paper. Parchment paper is my best friend here—it prevents sticking and makes cleanup instant.

A heavy-bottomed cup or glass — I use a sturdy drinking glass with a flat bottom. Some people use a potato masher, but I find a glass gives you more control over the smash. You want to press down firmly but gently so the potato flattens without shattering into tiny pieces.

A pastry brush or spoon — To brush the oil mixture onto the potatoes. A brush gets into the crevices better, but a spoon works fine if you’re lazy.

A knife and cutting board — For chopping the rosemary and mincing the garlic. Keep your knife sharp—chopping herbs is much easier with a sharp blade.

How to Make It: Step-by-Step

Alright, let’s make these Crispy Smashed Fingerling Potatoes with Rosemary! I’m walking you through exactly how I do it, including the little tricks I’ve picked up over the years.

Step 1: Prep the Potatoes

Start by washing the potatoes thoroughly under cold water. Scrub them with a brush to remove any dirt. You don’t need to peel them—the skin holds the potato together and adds texture. If the potatoes are very large, cut them in half so they are all roughly the same size. This ensures they cook at the same rate.

Step 2: Boil the Potatoes

Fill your large pot with water and add 1 tablespoon of salt. Bring it to a rolling boil. Once boiling, gently add the potatoes. Reduce the heat to a simmer and cook for 10-12 minutes. You’ll know they’re done when you can pierce them easily with a fork. They should be tender but not mushy. If they’re too soft, they’ll fall apart when you smash them. Drain them well in a colander.

Step 3: Prepare the Baking Sheet

While the potatoes are boiling, line your baking sheet with parchment paper. This is crucial for easy cleanup. Preheat your oven to 425°F (220°C). A hot oven is key for getting those crispy edges.

Step 4: Make the Seasoning Oil

In a small bowl, mix the olive oil, minced garlic, chopped rosemary, salt, and pepper. Stir it together. The garlic will start to release its aroma, and the rosemary will infuse the oil. If you’re adding red pepper flakes or Parmesan, mix those in now.

Step 5: Smash the Potatoes

This is the fun part. Take each boiled potato and place it on the prepared baking sheet. Using the bottom of a sturdy glass, press down firmly on each potato. You want to flatten them to about ½ inch thick. Don’t worry if they crack a bit—that’s actually good! Those cracks will get extra crispy. Space them out so they aren’t touching; they need room to crisp up.

Step 6: Season and Bake

Brush the top of each smashed potato generously with the rosemary-garlic oil. Make sure to get the oil into the cracks and crevices. Bake in the preheated oven for 20-25 minutes. You’ll know they’re done when the edges are golden brown and crispy, and the centers are fork-tender. If you want them extra crispy, broil them for the last 2 minutes, but watch them closely—they can burn quickly.

Step 7: Serve

Remove from the oven and let them cool for a minute. They will continue to crisp up as they cool slightly. Serve immediately while hot. I like to sprinkle a little extra flaky sea salt on top right before serving for that final crunch.

Expert Tips & Tricks

Here’s everything I’ve learned from making this dozens of times. These tips will save you from my mistakes.

Don’t Skip the Parchment Paper — I know it feels like extra waste, but these potatoes are sticky. Without parchment, you’ll be scraping burnt cheese and oil off your pan for 20 minutes. With it, you just crumple it up and toss it. Worth every penny.

Boil Until Tender, Not Mushy — This is the most common mistake. If you boil them too long, they’ll disintegrate when you smash them. Check them at 10 minutes. They should be just barely fork-tender. They will continue to cook in the oven.

Smash Firmly — Don’t be timid. Press down hard with the glass. The flatter the potato, the more surface area for crisping. Think of it like making a pizza base—flatten it out!

Use Fresh Herbs — I cannot stress this enough. Dried rosemary tastes like dust. Fresh rosemary tastes like a forest. If you don’t have fresh, buy a small bunch—they last a while in the fridge wrapped in a damp paper towel.

Don’t Crowd the Pan — If you pack the potatoes too tightly, they’ll steam instead of roast. Give them space. If you have too many, use two baking sheets. It’s better to do two batches than soggy potatoes.

Variations & Substitutions

Once you’ve nailed the basic version, here’s how you can mix it up. I’ve tried all of these.

Garlic Parmesan — After baking, sprinkle ½ cup of grated Parmesan cheese over the hot potatoes. Return to the oven for 2 minutes to melt. This is a crowd-pleaser, especially with kids.

Herb Garden — Swap the rosemary for a mix of thyme, oregano, and parsley. Fresh thyme pairs beautifully with garlic. This gives a more Mediterranean flavor profile.

Spicy Kick — Add ½ teaspoon of red pepper flakes to the oil mixture. Or, serve with a spicy aioli for dipping. Great if you like heat.

Gluten-Free — This recipe is naturally gluten-free! Just make sure your olive oil and seasonings are certified gluten-free if you have celiac disease. No substitutions needed.

Vegan — This is naturally vegan. No dairy involved. Just ensure your olive oil is high quality. Serve with a vegan dip like hummus or a cashew cream.

Serving & Storage

How to Serve: I usually serve these straight from the baking sheet at the dinner table—it looks rustic and stays warm. They pair wonderfully with easy lunch roll-ups or as a side to any roast meat. I also love them with a dollop of sour cream and chives.

Storage: Store leftovers in an airtight container in the refrigerator for up to 3 days. They will lose some crispiness in the fridge, but they’re still delicious.

Reheating: The best way to reheat them is in an air fryer or toaster oven at 400°F for 5-7 minutes. This restores the crispiness. Microwaving them will make them soft and chewy, which is not ideal. If you must microwave, do it in short bursts and finish in a hot skillet.

Freezing: I don’t recommend freezing these. The texture of boiled and smashed potatoes doesn’t freeze well—they become grainy and watery when thawed. It’s better to make them fresh.

Nutrition Information

I’m not a nutritionist, but here’s the breakdown if you’re tracking.

Per Serving (based on 4 servings):

• Calories: 220
• Protein: 4g
• Carbs: 32g
• Fiber: 3g
• Sugar: 1g
• Fat: 9g
• Saturated Fat: 1g
• Cholesterol: 0mg
• Sodium: 350mg

What’s Good: Potatoes are a great source of potassium and vitamin C. This recipe is relatively low in calories compared to fries or chips. It’s a wholesome, filling side dish.

What to Know: The calorie count comes mainly from the olive oil. If you’re watching your fat intake, you can reduce the oil to 1 tablespoon, though you’ll sacrifice some crispiness. It’s still good, just less rich.

Final Thoughts

So that’s my go-to Crispy Smashed Fingerling Potatoes with Rosemary! I’ve probably talked your ear off at this point, but when you make a recipe this often, you have a lot to say about it.

This has saved weeknight dinners more times than I can count. It’s my answer to “what’s for dinner” when I’m tired, don’t want takeout, and still want something that tastes really good. My kids are happy, my husband’s happy, and I’m happy because I’m not stressed about cooking.

Make it yours! Try different herbs, swap in your favorite cheese, or add some bacon bits. The best recipes are the ones you adapt to your family’s tastes.

If you make this, drop a comment and let me know what you think! I love hearing how recipes turn out in your kitchen. And if something doesn’t work, tell me that too—I’m here to help troubleshoot.

Happy cooking! And I hope your kitchen smells half as good as mine does right now.

Frequently Asked Questions

Can I use russet potatoes instead of fingerlings?

You can, but the texture will be different. Russets are starchy and can fall apart when smashed. If you use them, handle them gently and don’t boil them as long. Fingerlings are waxy and hold their shape better, which is why I prefer them. But if fingerlings aren’t available, Yukon Golds are a good second choice.

Why did my potatoes stick to the pan?

This usually happens if you didn’t use parchment paper or if the pan wasn’t oiled enough. Always use parchment paper for this recipe—it’s the easiest way to avoid sticky potatoes. If you don’t have parchment, grease the pan heavily with olive oil or butter.

Can I make these ahead of time?

Yes! You can boil and smash the potatoes up to a day ahead. Store them in the fridge in an airtight container. When you’re ready to cook, brush them with the oil and bake them as directed. They might need an extra 2-3 minutes in the oven since they’re cold.

What’s the best way to smash the potatoes?

I use the bottom of a sturdy glass. It gives you even pressure and doesn’t leave a masher mark. Some people use a potato masher, but it can tear the potato. The goal is to flatten it, not mash it into a pulp.

Can I use dried rosemary?

You can, but fresh rosemary has a much better flavor. If you use dried, use about 1 teaspoon. Dried rosemary can be potent and woody, so start with less and add more to taste. Fresh is definitely preferred for this recipe.

How do I reheat leftovers?

The best way is in an air fryer or toaster oven at 400°F for 5-7 minutes. This restores the crispiness. Microwaving will make them soft. If you must microwave, do it in short bursts and finish in a hot skillet with a little oil.

Can I freeze these potatoes?

I don’t recommend freezing them. The texture of boiled and smashed potatoes doesn’t freeze well—they become grainy and watery when thawed. It’s better to make them fresh.

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