Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary
Tender baby potatoes are boiled, gently smashed and roasted until the edges are ultra-crisp, then finished in nutty brown butter scented with garlic and fresh rosemary. A classic, steak-friendly side that delivers rich flavor and irresistibly crunchy texture.

Jake Woods's note
"This is a simple, elevated potato side that shines alongside steaks and roast beef — the brown butter gives a deep, nutty finish while garlic and rosemary add classic savory notes. Make the parboil ahead for fast weeknight service or roast fresh for dinner guests."
About This Recipe
This version of smashed potatoes leans into two pleasures most people crave in a side dish: concentrated, toasty flavor and crisp-edged texture. Parboiling the baby potatoes softens them just enough so the interiors remain pillowy when smashed, while finishing in hot oven or cast iron creates those coveted crunchy ruffles. The real flourish here is the brown butter—its nutty, savory depth coats each crevice and the last-minute garlic and rosemary perfume the dish without overwhelming the potatoes’ clean, earthy sweetness.
These are built to stand beside bolder mains—think grilled ribeye, roast chicken or a hearty mushroom ragù—yet they’re simple enough for weeknights. Small choices make a big difference: use even-sized new potatoes for uniform cooking, watch the butter carefully so it browns rather than burns, and don’t skip the flaky sea salt at the end; it’s what lifts the whole thing. If you like a bright counterpoint, a squeeze of lemon right before serving cuts through the richness and keeps the dish from feeling heavy.
Ingredients for Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary
- 1 1/2 lb baby (new) potatoes
- 1 1/2 tsp kosher salt (for boiling)
- 2 tbsp extra-virgin olive oil
- 1/2 tsp freshly ground black pepper
- 4 tbsp unsalted butter (for browning)
- 3 clove(s) garlic, minced (about 3 medium cloves)
- 2 tbsp fresh rosemary, finely chopped
- 1 tbsp fresh lemon juice (optional, bright finish)
- 1/2 tsp flaky sea salt (for finishing)
How to Make Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary
Step 1: Parboil the potatoes
Place the baby potatoes in a pot and cover with cold water by 1 inch. Add the kosher salt and bring to a boil, then reduce to a simmer and cook until a paring knife slides into the largest potatoes with little resistance, 12–15 minutes. Drain and let steam-dry in the colander for 2–3 minutes.For this step
- 1 1/2 lbbaby (new) potatoes
- 1 1/2 tspkosher salt (for boiling)
Step 2: Smash and season
Preheat the oven to 425°F (220°C) if using the oven finish; line a rimmed baking sheet with parchment or a silicone mat. Arrange the drained potatoes on the sheet, then use a heavy-bottomed glass or a potato masher to press each potato to about 1/2-inch thick. Brush or drizzle the smashed surfaces with the olive oil and sprinkle evenly with the black pepper.For this step
- 2 tbspextra-virgin olive oil
- 1/2 tspfreshly ground black pepper
Step 3: Choose a finishing method: oven roast or skillet sear
Oven method: roast the smashed potatoes on the middle rack for 20–25 minutes, flipping once halfway, until the edges are deeply browned and crisp. Skillet method: heat a large ovenproof or cast-iron skillet over medium-high heat with 1 tbsp oil, work in batches, and cook 3–5 minutes per side until crisp and golden (total 8–12 minutes per batch).For this step
- 4 tbspunsalted butter (for browning)
- 3 clove(s)garlic, minced (about 3 medium cloves)
- 2 tbspfresh rosemary, finely chopped
Step 4: Make the brown butter with garlic & rosemary
While the potatoes finish, melt the unsalted butter in a small skillet over medium heat. Swirl frequently as the butter foams and then turns golden-brown with nutty aroma, 3–5 minutes; watch closely to avoid burning. Add the minced garlic and chopped rosemary in the last 30–45 seconds to soften and perfume the butter, then remove from heat and stir in the lemon juice if using.For this step
- 1 tbspfresh lemon juice (optional, bright finish)
- 1/2 tspflaky sea salt (for finishing)
Step 5: Finish and season
Transfer the hot potatoes to a serving dish (or leave on the baking sheet) and spoon the brown-butter, garlic & rosemary mixture over them, making sure to catch the browned bits from the pan. Scatter the flaky sea salt over the potatoes and taste for seasoning—add a pinch more kosher salt if needed.Step 6: Make-ahead tips & serving suggestions
Make-ahead: parboil and cool the potatoes up to 24 hours ahead; store covered in the fridge and smash/finish just before serving, adding 5–10 minutes to oven time if chilled. Serve hot alongside grilled steaks, roast beef, or a beef roast; garnish with extra rosemary, a squeeze of lemon, or a dollop of horseradish cream or chimichurri for contrast.
- Place the baby potatoes in a pot and cover with cold water by 1 inch. Add the kosher salt and bring to a boil, then reduce to a simmer and cook until a paring knife slides into the largest potatoes with little resistance, 12–15 minutes. Drain and let steam-dry in the colander for 2–3 minutes.
- Preheat the oven to 425°F (220°C) if using the oven finish; line a rimmed baking sheet with parchment or a silicone mat. Arrange the drained potatoes on the sheet, then use a heavy-bottomed glass or a potato masher to press each potato to about 1/2-inch thick. Brush or drizzle the smashed surfaces with the olive oil and sprinkle evenly with the black pepper.
- Oven method: roast the smashed potatoes on the middle rack for 20–25 minutes, flipping once halfway, until the edges are deeply browned and crisp. Skillet method: heat a large ovenproof or cast-iron skillet over medium-high heat with 1 tbsp oil, work in batches, and cook 3–5 minutes per side until crisp and golden (total 8–12 minutes per batch).
- While the potatoes finish, melt the unsalted butter in a small skillet over medium heat. Swirl frequently as the butter foams and then turns golden-brown with nutty aroma, 3–5 minutes; watch closely to avoid burning. Add the minced garlic and chopped rosemary in the last 30–45 seconds to soften and perfume the butter, then remove from heat and stir in the lemon juice if using.
- Transfer the hot potatoes to a serving dish (or leave on the baking sheet) and spoon the brown-butter, garlic & rosemary mixture over them, making sure to catch the browned bits from the pan. Scatter the flaky sea salt over the potatoes and taste for seasoning—add a pinch more kosher salt if needed.
- Make-ahead: parboil and cool the potatoes up to 24 hours ahead; store covered in the fridge and smash/finish just before serving, adding 5–10 minutes to oven time if chilled. Serve hot alongside grilled steaks, roast beef, or a beef roast; garnish with extra rosemary, a squeeze of lemon, or a dollop of horseradish cream or chimichurri for contrast.
Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary Tips
Pick even-sized potatoes
Choose baby potatoes that are similar in size so they parboil evenly; halve any that are noticeably larger before cooking.
Don’t overcook the potatoes
Parboil until a knife slips into the largest potato with slight resistance—overcooked potatoes will fall apart when smashed.
Smash to ½-inch
Press each potato to roughly 1/2-inch thick for maximum contrast between a tender center and crisp edges; too thin and they’ll burn, too thick and they won’t crisp.
Brown butter technique
Melt butter over medium heat and swirl frequently; remove from heat the moment it smells nutty and is amber—carryover will continue to brown it.
Add garlic last
Toss minced garlic into the hot butter for only 30–45 seconds to soften and perfume without turning bitter from overcooking.
Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary Variations and Substitutions
Dairy-free brown butter
Use a high-quality vegan butter or brown a combination of olive oil and a touch of ghee alternative; finish with toasted nut oil for the nutty note.
Herb swap: thyme & lemon
Replace rosemary with fresh thyme and increase the lemon to 2 teaspoons for a brighter, more Mediterranean profile that pairs well with fish.
Parmesan-crisp finish
Sprinkle 2–3 tablespoons finely grated Parmesan over the potatoes in the last 5 minutes of oven roasting for an extra-crisp, savory crust.
Smoky paprika twist
Add 1 teaspoon smoked paprika to the olive oil before roasting and finish with chopped parsley for a smoky, colorful variation.
How to Store and Make Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary Ahead
Store leftovers in an airtight container in the refrigerator for up to 3 days. To keep the edges crisp, reheat on a rimmed baking sheet in a 400°F oven for 8–12 minutes rather than microwaving; refresh with a little melted butter or oil before serving. Parboiled potatoes can be prepared up to 24 hours ahead—keep them covered and chilled, then smash and roast when ready.
What to Serve With Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary
These potatoes are classic with grilled or roasted beef—try a peppery ribeye or simple roast beef for a perfect pairing. For contrast, serve with bright accoutrements like chimichurri, a dollop of horseradish cream, or quick-pickled red onion; a lemon wedge also helps cut the richness. For drinks, a robust red like Malbec or a toasty, oaked Chardonnay complements the brown-butter notes.
Classic Brown-Butter Smashed Potatoes with Garlic & Rosemary FAQs
Can I use larger potatoes instead of baby potatoes?
Yes—use Yukon Golds or red potatoes cut into 1 1/2–2 inch pieces so they parboil evenly, and adjust smash size so each piece still reaches about 1/2-inch thickness for crisping.
What if my butter smells burnt?
Burnt butter will smell acrid; discard it and start over. To avoid burning, reduce heat slightly and remove the pan from the burner as soon as the butter turns amber and gives off a nutty aroma.
How do I get extra-crispy edges?
Space potatoes so they don’t touch, use enough oil on the smashed surface, roast at a high temperature (425°F), and flip once halfway to brown both sides; finishing in a hot cast-iron skillet in small batches will also deepen the crisp.
Can I make the whole dish ahead of time?
You can parboil the potatoes up to 24 hours ahead, but for best texture smash and roast just before serving; if fully cooked ahead, re-crisp in a hot oven and refresh with warm brown butter before serving.
Is dried rosemary okay to use?
Dried rosemary can work if finely crushed, but use about one-third the amount and add it early in the butter to rehydrate and release flavor—fresh rosemary gives a brighter, greener finish.
About the author
Jake WoodsHello, I'm Jake. I started this recipe site with the idea that I hated recipe websites that overwhelm you with long stories and ads just to see plain content that's not helpful. My goal is to provide you with quality recipes, simple ideas and a fun cooking experience. There's lots of fun things to cook, and I think as you browse the site you'll find that TopShelf.Recipes is the place for quality recipes on the web.
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Nutrition Facts
Per serving: 1½ tbsp
Nutrition values are estimated from USDA ingredient data and may vary based on preparation, brands, and portion sizes. Values are provided for informational purposes only.
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