Mom's Best Recipes
Recipe

Crispy Smashed Brussels Sprouts

Par-cooked, smashed flat, and roasted until lacy-edged and crunchy, then finished with garlic butter, Parmesan, and lemon. Optional spicy honey drizzle.

Author By Matt Campbell
4.8
A single sheet pan of crispy smashed Brussels sprouts with lacy browned edges, topped with grated Parmesan, flecks of garlic, and lemon wedges on the side, natural kitchen light
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If crispy smashed potatoes are the party trick, these crispy smashed Brussels sprouts are the plot twist. Same vibe, better crunch-to-effort ratio, and you still get that addictive thing where the edges go all lacy and browned like a little vegetable potato chip.

The method is simple: par-cook the sprouts so they are tender, smash them flat, then roast hard and hot until they crisp. After that, we finish with garlic butter, Parmesan, and lemon so every bite hits salty, bright, and toasty. And if you are the kind of person who loves hot honey on everything, I have not forgotten you.

A hand using a flat spatula to smash par-cooked Brussels sprouts on a parchment-lined baking sheet before roasting, close-up food photography

Why It Works

  • Par-cooking fixes the one Brussels sprouts problem: raw centers. You get tender middles without sacrificing crisp edges.
  • Smashing creates more surface area, which means more browning, more crunch, and those frilly, caramelized bits everyone fights over.
  • Garlic butter plus Parmesan builds a crust that tastes like you tried harder than you did.
  • Lemon at the end keeps the flavor bright and cuts through the richness so it never feels heavy.

Pairs Well With

Storage Tips

These are crispiest right away, but leftovers are still worth saving.

  • Refrigerate: Cool completely, then store in an airtight container for up to 3 days.
  • Reheat for crunch: Spread on a sheet pan and reheat at 425°F for 6 to 10 minutes until sizzling. An air fryer at 390°F for 4 to 6 minutes also works great.
  • Avoid the microwave: It makes the edges sad and steamy. If you must, microwave briefly, then crisp in a hot pan.
  • Hot honey note: If you plan on leftovers, drizzle hot honey on individual servings, not the whole batch.

Common Questions

Do I have to boil them first?

Par-cooking is the secret weapon. It gets the centers tender so you can roast aggressively without ending up with burnt outsides and crunchy raw cores. If you want the fastest route, steam them instead of boiling.

Why are my Brussels sprouts not getting crispy?

Usually one of these: the pan is crowded, the sprouts are still wet, or your oven is not hot enough. Dry them well after par-cooking, give them space, and roast at 450°F. Also, a dark metal sheet pan browns better than a glass dish.

Can I use frozen Brussels sprouts?

Yes, with a small expectation adjustment. Thaw, then pat very dry. Frozen sprouts can be softer and may not smash as cleanly, but you will still get crisp edges if you roast hot and do not crowd the pan.

What is the best way to smash them?

Smash them on a room-temperature surface (like a cutting board or cool sheet pan) using the bottom of a sturdy measuring cup or a potato masher. Press straight down until they flatten to about 1/2 inch. If a few leaves pop off, that is good. Those loose leaves turn into crunchy little chips.

Can I make them dairy-free?

Yes. Swap butter for olive oil and use a dairy-free Parmesan style alternative, or simply skip the cheese and finish with extra lemon zest, flaky salt, and a little nutritional yeast for that savory edge.

I started making these because I wanted a vegetable that could hang with the snack foods. You know the ones. The bowl empties first, people “just try one,” and suddenly you are scraping crumbs off the tray like it is your job. The first time I smashed Brussels sprouts like potatoes, I thought it might be a little unhinged. Then the loose leaves crisped into salty little shards, and I realized we were onto something.

Now this is my go-to when I want something that feels a bit special without turning dinner into a production. Hot oven, simple ingredients, and a finish that tastes like you have a restaurant secret. Also, I fully support eating the crispiest ones straight off the pan. That is quality control.