These crispy smashed brussels sprouts are golden and crunchy on the outside, tender on the inside, and coated in cheesy, garlicky balsamic goodness. They’re easy to make in the air fryer or oven and taste just like restaurant-style Brussels sprouts — only healthier!
A Quick Look At The Recipe
- ✅ Recipe Name: Crispy Smashed Brussels Sprouts (Air Fryer or Oven!)
- 🕒 Prep Time: 10 minutes | Cook Time: 15–20 minutes
- 👪 Serves: 4
- 🍽 Calories: ~120 per serving
- 🥣 Main Ingredients: Brussels sprouts, olive oil, garlic, balsamic vinegar, parmesan cheese, salt, black pepper
- 📖 Dietary Info: Gluten-free, vegetarian, low-carb, high-fiber, healthy
- ⭐ Why You'll Love It: Extra-crispy edges, garlicky balsamic flavor, easy to make in the air fryer or oven, and perfect for meal prep or holiday sides.
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I used to think I didn’t like Brussels sprouts—until I realized it wasn’t the sprouts, it was the way they were cooked. Growing up, they were always steamed and bland. But after years of testing vegetable sides in both the oven and air fryer, I learned that high heat + proper spacing is the secret to making Brussels sprouts truly crispy.
When Brussels sprouts are smashed, roasted until golden, and seasoned generously, they go from boring to downright addictive. This recipe builds on that technique with garlic, cheese, and a quick balsamic glaze for the perfect balance of crunch and flavor. I make these anytime I want a savory, high-fiber side that still feels indulgent—whether it’s a cozy weeknight dinner or a holiday table.
If you love crispy veggie recipes, try my Air Fryer Butternut Squash Cubes, Balsamic Maple Brussels Sprouts, and Crispy Air Fryer Parmesan Zucchini next. Each one is tested, easy to make, and designed to convert even the biggest Brussels sprouts skeptic.
Jump to:
- A Quick Look At The Recipe
- Why You'll Love This Recipe
- Air Fryer vs Oven Smashed Brussels Sprouts
- Ingredients You'll Need
- Easy Substitutions & Variations
- How to Make Smashed Brussels Sprouts in the Air Fryer and Oven (Step-by-Step)
- 1 Minute Video Tutorial
- Expert Tips
- Troubleshooting Guide
- Serving Suggestions
- Frequently Asked Questions
- Storage & Freezing Tips
- More Crispy Vegetable Recipes You'll Love
- 📖 Recipe
- 💬 Comments
⭐️⭐️⭐️⭐️⭐️
These are super crispy! I was so surprised, and I loved it. These remind me of crispy smashed potatoes and taste so cheesy and delish! We will be making these again for sure 🙂
- Saskia
Why You'll Love This Recipe
- Extra crispy and cheesy. Smashing the Brussels sprouts creates those golden, crunchy edges that make every bite of these crispy smashed Brussels sprouts irresistible.
- Simple and foolproof. Just boil, smash, and air fry (or bake!)—no fancy tools or complicated steps.
- Lighter comfort food. Made with olive oil, parmesan, and balsamic for a flavorful side that’s naturally gluten-free and veggie-packed.
- Versatile and crowd-friendly. Works with fresh or frozen Brussels sprouts and pairs perfectly with everything from chicken to salmon.
- Tested and perfected. I’ve made this recipe dozens of times to dial in the perfect crisp, seasoning, and flavor balance.
Air Fryer vs Oven Smashed Brussels Sprouts
Both methods work well for making crispy smashed Brussels sprouts, but each has its own perks depending on what you’re looking for.
Air Fryer Method:
- Time: 12–14 minutes at 400°F
- Texture: Extra crispy edges with a tender, soft center
- Best For: Small batches, maximum crispiness, quick weeknight dinners, and minimal cleanup
Oven Method:
- Time: 25–30 minutes at 425°F
- Texture: Slightly softer inside with a rich, caramelized flavor
- Best For: Feeding a crowd, meal prep, or holiday sides
Ingredients You'll Need
- Brussels Sprouts: Fresh Brussels sprouts get the crispiest results! See frozen Brussels sprouts instructions below, or try my Air Fryer Frozen Brussels Sprouts Recipe!
- Olive or Avocado Oil: A light coating helps them roast evenly and turn perfectly golden and crispy.
- Balsamic Vinegar: Adds a rich, tangy depth that pairs perfectly with the cheese and garlic.
- Honey: Balances the acidity with a touch of natural sweetness. Use maple syrup for a vegan option.
- Garlic: Freshly minced gives the best flavor, but garlic powder works in a pinch.
- Salt & Pepper: Simple seasonings that bring everything together.
- Parmesan Cheese: Adds a cheesy, savory finish. For a dairy-free option, try nutritional yeast instead.
Scroll to the recipe card below for exact measurements!
Easy Substitutions & Variations
- Using frozen Brussels sprouts: Thaw completely and do not boil. Smash, season, and air fry or bake until golden and crispy.
- Make it vegan and dairy-free: Skip the parmesan or swap it with nutritional yeast for that same cheesy flavor. Replace the honey with maple syrup to keep it fully plant-based.
- Make it spicy: Add a pinch of red pepper flakes or drizzle with hot honey for the perfect sweet-heat combo.
- Make it smoky: Add a pinch of smoked paprika or drizzle with chili oil for a deeper flavor.
- Flavor twist: Try lemon zest and parmesan for a bright, fresh version, or toss the finished sprouts in buffalo sauce for a fun game-day snack.
- Add bacon: For extra savory crunch, sprinkle cooked, crumbled bacon over the Brussels sprouts during the last few minutes of cooking, right after adding the parmesan. It adds amazing flavor and pairs perfectly with the balsamic glaze.
Need to substitute an ingredient?
Ask AI for suggestions on how to substitute the particular ingredient.
How to Make Smashed Brussels Sprouts in the Air Fryer and Oven (Step-by-Step)
- Step 1: Bring a large pot of salted water to a boil. Add the trimmed Brussels sprouts and cook for 8–10 minutes, until fork-tender. (You can also microwave them in a covered bowl with ⅓ cup water for 4–6 minutes.)
- Step 2: Drain and transfer the Brussels sprouts to an ice bath for a few minutes to stop the cooking.
- Step 3: Dry them really well (this is key for crispiness!). Spread the Brussels sprouts on a clean towel and pat them completely dry. Any excess moisture will prevent them from getting crispy.
- Step 4: Gently smash each sprout with the bottom of a glass or measuring cup. Drizzle the balsamic dressing over top and flip to coat evenly.
How to Cook them in the Air Fryer:
- Step 5 (air fryer): Arrange the smashed Brussels sprouts in a single layer in a preheated air fryer basket. Work in batches if needed—overcrowding = less crisp.
- Step 6 (air fryer): Air fry at 400°F for 6–7 minutes, until golden and crisp on one side. Flip, sprinkle with parmesan cheese, and air fry another 5–6 minutes, until perfectly crispy and melty.
How to Cook them in the Oven:
- Step 5 (oven): Preheat your oven to 425°F and line a large baking sheet with parchment paper or foil. Arrange the smashed Brussels sprouts in a single layer with space between them.
- Step 6 (oven): Roast for 20 minutes, until the bottoms are golden and crisp. Flip, add the parmesan cheese, and roast another 8–10 minutes, until crispy and melty.
1 Minute Video Tutorial
Expert Tips
- Skip the parchment paper. For the crispiest smashed Brussels sprouts, skip the parchment in your air fryer or oven. It blocks airflow and traps moisture. Instead, cook them directly in the basket or on a lightly oiled baking sheet for that irresistible crunch.
- Dry the sprouts really well. After boiling (or microwaving), spread the Brussels sprouts on a clean towel and pat them completely dry. Removing surface moisture is the secret to those golden, crispy edges.
- Smash while warm. Brussels sprouts flatten more easily when they’re still warm. This helps the centers stay tender and creamy instead of cracking or falling apart.
- Don’t skip the flip. Flip each sprout halfway through cooking so both sides get evenly golden and crisp. This small step makes a big difference in texture and color.
- Work in batches if needed. Overcrowding the basket or pan causes steaming instead of crisping. Give the sprouts space to breathe for the best results.
Troubleshooting Guide
I’ve made these smashed Brussels sprouts countless times—here are the most common issues and exactly how to fix them:
- Not crispy enough: The sprouts were too wet or overcrowded. Pat them completely dry and cook in batches so air can circulate properly.
- Edges burnt but centers soft: The temperature was too high or they cooked too long after flipping. Reduce the cook time by 2–3 minutes or lower the heat slightly.
- Cheese burning before crisping: Add the parmesan during the last few minutes of cooking, just until it melts and turns golden.
- Soggy sprouts: Skip parchment paper—it traps steam. Cook directly in the air fryer basket or on a lightly oiled baking sheet instead.
- Falling apart when smashing: Smash the sprouts while they’re still warm (not hot). If they’re too soft, they’ll break apart.
- Bitter flavor: Overcooked Brussels sprouts can taste bitter. Air fry or roast just until golden and crisp for the best flavor.
Serving Suggestions
These crispy smashed Brussels sprouts are the kind of side that goes with just about everything. Here are a few of my favorite ways to serve them:
- Weeknight dinner: Pair with Air Fryer Boneless Chicken Thighs, steak, pork tenderloin, or baked Everything Bagel Crusted Salmon, for a quick, balanced meal.
- Holiday spread: Serve alongside mashed potatoes, roasted carrots, or Healthy Almond Flour Cornbread for a festive veggie side.
- Snack or appetizer: Enjoy straight from the air fryer with a side of Homemade Healthy Ranch, aioli, or Greek yogurt dipping sauce.
- With pasta: These pair perfectly with creamy dishes like Healthy Penne Alla Vodka with Chicken or Healthy Chicken Bolognese for a cozy, restaurant-style meal at home.
Frequently Asked Questions
They’re likely too wet or overcrowded. Make sure to pat them completely dry and cook in batches so the air can circulate properly.
Yes, boiling (or microwaving) them first makes them tender enough to flatten without breaking apart.
Yes! Thaw them completely first and skip the boiling step. Just smash, season, and air fry or bake until golden and crispy.
For the best crispy texture, air fry at 400°F. Flip halfway through and add the parmesan toward the end so it melts perfectly without burning.
An ice bath stops them from cooking further and helps keep them from turning mushy. Super important to get that perfect texture!
Storage & Freezing Tips
- To store: Let the smashed Brussels sprouts cool completely, then store them in an airtight container in the fridge for up to 4 days.
- To reheat: For best results, reheat in the air fryer at 375°F for 4–5 minutes or in the oven at 400°F for 6–8 minutes until hot and crispy again. Avoid the microwave—it makes them soggy.
- To freeze: I don’t recommend freezing these. Brussels sprouts lose their crispy texture once thawed, so they’re best enjoyed fresh or reheated within a few days.
More Crispy Vegetable Recipes You'll Love
If you loved these smashed brussels sprouts, here are a few more recipes to try next:
Did you make this recipe?
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📖 Recipe
Crispy Smashed Brussels Sprouts
Ingredients
- 2 pounds Brussels sprouts, ends trimmed
- 2 - 3 tablespoon olive oil or avocado oil
- 1 tablespoon balsamic vinegar
- 1 - 2 teaspoon honey
- 2 cloves minced garlic or 1 teaspoon garlic powder
- ½ - 1 teaspoon salt, based on preference
- ½ teaspoon ground pepper
- ⅓ - ½ cup parmesan cheese
Instructions
- Preheat air fryer to 400°F or oven to 425°F.
- Fill a large bowl with ice water and set it to the side.
- Bring a pot of salted water to a boil. Add Brussels sprouts and cook for about 8 to 10 minutes, until tender when pierced with a fork.
- While sprouts cook, whisk together olive oil, balsamic vinegar, honey, garlic, salt, and pepper.
- Drain Brussels sprouts, transfer to ice water for a few minutes to cool, then dry and place on a baking sheet. Make sure they are dry, or else they won’t get as crispy.
- Use a small glass or measuring cup to flatten sprouts.
- Drizzle the “dressing” on top and flip the brussels to make sure they are all coated.
- Air Fryer: Arrange sprouts in a single layer in the preheated air fryer. You may need to do two batches for the entire 2-pound batch. Air fry for 6 - 7 minutes until crispy. FLIP, sprinkle with parmesan cheese, and air fry for an additional 5 - 6 minutes or until they reach your desired crispiness level.
- Oven: Use a baking sheet WITHOUT parchment paper. You can use foil if necessary. Roast in the oven for a total of 30 minutes. Roast for 20 minutes until the bottoms are crispy and golden brown. FLIP the Brussels, sprinkle with parmesan cheese, and roast for another 10 - 15 minutes or until they reach your desired crispiness level.
Saskia says
These are super crispy! I was so surprised and I loved it. These remind my of crispy smashed potatoes and taste so cheesy and delish! We will be making these again for sure 🙂