Why This Recipe Works

Double-cook method: Boiling first creates a fluffy interior; roasting second delivers glass-shatter crisp edges.
Generous fat-to-spud ratio: A two-step basting guarantees every cranny turns deeply golden.
Garlic-herb butter finish: Brushing at the end keeps aromatics vibrant and prevents burnt-bitter garlic.
Smash technique: Using the base of a sturdy mug gives consistent ½-inch thickness for even browning.
Hot baking sheet: Pre-heating the pan jump-starts caramelization the moment potatoes hit metal.
Make-ahead friendly: Boil and smash up to 24 hours ahead; roast just before serving.
Vegetarian main dish: Pair with a crisp salad for a meatless dinner that still feels indulgent.

Ingredients You'll Need

Great smashed potatoes start at the produce aisle. Look for petite, waxy baby potatoes—Yukon Gold or red-skinned—about 1½ inches across. Their thin skins blister beautifully and the lower starch content means they hold their shape after smashing. Avoid russets; they’ll fall apart and turn mealy. Seek out potatoes that feel firm and have no green tinge under the skin, a sign of solanine buildup.

For fat, I blend grass-fed unsalted butter with a splash of extra-virgin olive oil. The butter brings nutty flavor; the oil raises the smoke point so we can roast at 450 °F without burning. Choose European-style butter (82 % fat) for extra richness.

Garlic should be plump with tight skins; avoid any green sprouts which taste bitter. I use fresh rosemary and thyme—woody herbs that stand up to high heat. If you only have dried, reduce quantities by two-thirds. Kosher salt seasons evenly; its coarse crystals adhere well to the oily potato surfaces. Finish with freshly cracked black pepper and a pinch of smoked paprika for subtle campfire undertones.

How to Make Crispy Smashed Potatoes with Garlic Herb Butter

Boil the potatoes

Scrub 2 lb (900 g) baby potatoes but leave skins on. Place in a large saucepan, cover with cold salted water (1 Tbsp kosher salt per quart), and bring to a boil. Reduce to a lively simmer and cook 15–18 minutes, until a paring knife slides through with zero resistance. Drain thoroughly and let steam-dry in the colander for 2 minutes; surface moisture is the enemy of crunch.

Preheat & heat the pan

Place a rimmed 13×18-inch sheet pan on the middle rack and heat oven to 450 °F (232 °C). A screaming-hot pan jump-starts crust formation the instant potatoes touch metal—no sticking, no sad soggy bottoms.

Smash time

Transfer potatoes to a cutting board. Lightly oil the base of a heavy mug or cast-iron skillet. Press straight down on each potato until it’s about ½-inch thick; edges should fray and crackle—those nooks = mega crunch. Work quickly while potatoes are warm; cold spuds resist smashing and can split unevenly.

First fat bath

Carefully remove the blazing sheet pan. Pour 2 Tbsp olive oil and 1 Tbsp melted butter onto it; swirl to coat. Arrange smashed potatoes in a single layer, jagged side up. Brush tops with another 1 Tbsp butter-oil blend and sprinkle with ½ tsp kosher salt and ¼ tsp black pepper.

Roast for golden bottoms

Slide pan back onto the middle rack and roast 15 minutes. Meanwhile, melt 3 Tbsp butter with 1 Tbsp olive oil in a small saucepan. Add 2 smashed garlic cloves, 2 sprigs rosemary, and 3 sprigs thyme. Keep warm over the lowest heat; do not let garlic brown.

Remove pan, use a thin metal spatula to flip each potato—be gentle; the crust is delicate. Lightly press again to increase surface area. Brush with infused butter (discard herb stems but keep garlic). Return to oven 12–15 minutes more, until deep amber and edges look like potato chips.

Final herb sizzle

Transfer potatoes to a warm platter. Re-warm the remaining infused butter, stir in 1 Tbsp chopped parsley and a squeeze of lemon juice. Spoon over potatoes so the butter seeps into crags. Shower with flaky sea salt and serve immediately.

Expert Tips

Hot pan = non-stick magic

Never skip preheating the sheet pan. A radiant surface sears the potato base instantly, preventing sticking and creating a caramelized crust.

Smash twice for extra crunch

A gentle second press after flipping exposes fresh starchy surfaces that blister into ultra-crispy shards.

Dry = crisp

After boiling, let potatoes steam in the colander until they stop releasing wisps of vapor. Excess water will steam instead of roast.

Infuse butter low & slow

Keep the herb butter below 140 °F to prevent garlic from turning acrid; you want gentle fragrance, not browned bits.

Uniform size = even cooking

Buy potatoes of similar size so they boil and roast at the same rate; otherwise you’ll have some mushy and others underdone.

Color equals flavor

Don’t pull them too early. Wait until the edges turn deep mahogany; that’s where the nutty, toasty complexity lives.

Reheat on a dry skillet

Leftovers resurrect perfectly in a cast-iron pan over medium heat—no microwave sogginess, just restored crunch.

Finish with acid

A whisper of lemon juice in the final butter brightens the rich, garlicky potatoes and keeps palates refreshed.

Variations to Try

Loaded Baked: Top roasted potatoes with shredded cheddar, crumbled bacon, sour cream, and chives for a fork-and-knife appetizer.
Spicy Harissa: Swap smoked paprika for 1 tsp harissa paste whisked into the butter; finish with cilantro and a drizzle of yogurt.
Lemon-Dill Salmon Plate: Serve potatoes alongside flaked hot-smoked salmon, arugula, and a lemon-dill crème fraîche for a bistro-style main.
Vegan Umami: Replace butter with 50/50 olive oil and melted vegan butter; add 1 tsp white miso to the final baste for savory depth.
Truffle-Parmesan: Omit herbs, finish with white truffle oil and a snowfall of Parmigiano-Reggiano during the last 2 minutes of roasting.
Southwest Street Corn: Toss hot potatoes with elote seasoning, cotija, and a squeeze of lime; sprinkle with fresh corn kernels and cilantro.

Storage Tips

Make-ahead: Boil and smash potatoes up to 24 hours ahead. Arrange in a single layer on a parchment-lined tray, cover tightly with plastic, and refrigerate. When ready to serve, slide the cold potatoes onto the pre-heated pan and proceed with roasting; add 2 extra minutes to compensate for chill.

Leftovers: Cool completely, then refrigerate in an airtight container up to 4 days. For best texture, reheat in a dry cast-iron skillet over medium heat 3–4 minutes per side. A 400 °F oven works too—avoid the microwave unless you enjoy rubbery edges.

Freezer: Freeze roasted potatoes on a tray until solid, then transfer to a zip bag for up to 2 months. Reheat from frozen on a sheet pan at 425 °F for 15 minutes, flipping halfway.

Frequently Asked Questions

Yes—cut them into 1 ½-inch chunks before boiling. The smash will be less dramatic, but you’ll still achieve crisp edges. Reduce initial roast to 12 minutes before flipping.

The pan wasn’t hot enough or you skimped on oil. Make sure the empty sheet pan heats at least 7 minutes and that you see shimmering oil when you swirl it.

Absolutely—pre-heat air fryer to 400 °F. Cook smashed potatoes in a single layer 10 minutes, flip, baste, and cook 6–8 minutes more. Work in batches for even browning.

Infuse the butter off-heat or at very low temp, then brush on after the first roast. Save delicate chopped parsley for the very end.

Double the recipe and use two sheet pans on separate racks; swap pans halfway for even coloring. Keep finished batches warm on a wire rack set over a sheet pan in a 200 °F oven.

Garlic-butter steak, herb-roasted chicken, citrus salmon, or a hearty kale Caesar salad. They’re versatile enough to anchor a vegetarian plate with grilled asparagus and herbed yogurt.