Name: Lemon Parmesan Roasted Brussels Sprouts
Prep time: 5 min
Cook time: 25 min
Total time: 30 min
Ingredients: 1 lb Brussels sprouts (trimmed and halved); 2 tablespoons olive oil; 2 teaspoons garlic powder; 1/2 teaspoon red chili flakes (optional); 1/2 teaspoon salt; 1/4 teaspoon black pepper; 1 lemon (juiced (about 2 tablespoons)); 1/4 cup parmesan cheese

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These Lemon Parmesan Roasted Brussels Sprouts are crispy, caramelized, and bursting with bright, savory flavor. Ready in about 30 minutes, this easy Brussels sprouts recipe makes a healthy side dish for weeknight dinners, holidays, and more!

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Brussels sprouts have come a long way from their boiled-and-bitter reputation. If you only know them as the vegetable you pushed to the side of your plate as a kid, I highly recommend giving them another try. With the right balance of spices, a spritz of lemon, and a sprinkle of parmesan cheese, roasted Brussels sprouts can quickly transform into a crispy and crave-worthy side dish.

Case in point: these Lemon Parmesan Roasted Brussels Sprouts.

Roasting brings out the sprouts’ natural sweetness while creating caramelized edges for more texture. A generous squeeze of fresh lemon juice helps brighten every bite. Meanwhile, parmesan adds a nutty, umami finish.

Beyond flavor, Brussels sprouts also offer some serious nutritional benefits. They’re especially rich in fiber, vitamin C, vitamin K, and antioxidants, making them a nutritious addition to your diet. Like broccoli and kale, they’re also classified as cruciferous vegetables, a group of veggies tied to benefits like better blood sugar control and a lower risk of certain cancers.

Whether you’re looking for an easy side dish or a healthy addition to a holiday spread, these Lemon Parmesan Roasted Brussels Sprouts definitely deserve a spot on your table. Give them a shot and let me know what you think in the comments!

Why you’ll love these Lemon Parmesan Roasted Brussels Sprouts

They bring big flavors but are made with simple ingredients.
They strike the perfect balance between crisp and tender.
They’re packed with fiber for a satisfying side dish.
They’re nutrient-dense and rich in a wide range of vitamins, minerals, and antioxidants.
They pair well with weeknight dinners or holiday meals.

Lemon Parmesan Roasted Brussels Sprouts ingredients

Brussels sprouts take center stage in this simple side dish. I like buying a bag of halved sprouts to speed up prep time, but you can also trim and halve them yourself!
Olive oil helps the Brussels sprouts caramelize and develop perfectly crisp, golden-brown edges.
Garlic powder adds lots of savory flavor to this dish.
Red chili flakes bring a subtle kick of heat. Feel free to use a little less or just skip it altogether if you prefer a milder flavor.
Lemon juice adds a zip of flavor and a fresh, zesty finish to brighten up the roasted Brussels sprouts. Freshly squeezed lemon juice works best here!
Parmesan cheese gives this recipe a salty, savory finish that pairs perfectly with the lemon and crispy sprouts. You can also use vegan parmesan to keep it dairy-free!

How to serve these Lemon Parmesan Roasted Brussels Sprouts

Toss them into grain bowls with quinoa, farro, or brown rice for a little more texture and brightness.
Pair them with pasta dishes or creamy risottos to balance out the richness.
Add them to holiday spreads, along with other roasted veggies, stuffing, and mains.
Use them as a warm salad base topped with nuts, seeds, or a light vinaigrette for extra flavor.
Serve them alongside your favorite proteins for a simple side dish.

Substitutions & variations

Parmesan cheese – Swap in pecorino romano, crumbled feta, or your favorite dairy-free parmesan (my go-to is Follow Your Heart). You can also use nutritional yeast for another vegan option.
Olive oil – You can substitute avocado oil or another neutral cooking oil if you prefer.
Garlic powder – Try onion powder or an Italian seasoning blend for a slightly different (but equally delicious) flavor.
Red chili flakes – I love adding a few pinches of red chili flakes to kick up the heat, but they’re totally optional. You can always use less or leave them out for a milder side dish.
Experiment with herbs – Finish the roasted Brussels sprouts with fresh parsley, thyme, rosemary, or basil for extra color and flavor.
Add crunch – Sprinkle a handful of chopped walnuts, pecans, almonds, or toasted breadcrumbs over the top right before serving for more texture.
Make them sweeter – Try adding a quick drizzle of maple syrup or honey to balance out the parmesan and spicy red chili flakes!

Quick recipe tips

Dry the Brussels sprouts thoroughly after washing — if there’s too much moisture, it can keep them from crisping up in the oven.

Save any loose leaves that fall off while prepping, because they roast into extra crispy bites.

Let the sprouts rest for a few minutes before adding the lemon juice; this lets the steam escape so the edges stay nice and crisp.

Step-by-step instructions

Preheat the oven: Set the oven to 400° F and line a baking sheet with parchment paper.
Season the sprouts: Toss halved Brussels sprouts with olive oil, garlic powder, red pepper flakes, salt, and pepper until evenly coated.
Arrange on the baking sheet: Spread Brussels sprouts in a single layer, cut side down for maximum crispiness.

Roast: Bake for 25-30 minutes, until deeply golden and crisp on the edges.
Finish and serve: Drizzle with fresh lemon juice and sprinkle with parmesan cheese before serving.

Make ahead & storage

These Lemon Parmesan Roasted Brussels Sprouts are best enjoyed fresh from the oven, but you can always prep them ahead of time or reheat leftovers for an easy side dish.

Meal prep

Prep the Brussels sprouts: Trim and halve the Brussels sprouts up to 2 days in advance, then keep them in an airtight container in the fridge until you’re ready to bake.
Season before roasting: For the crispiest texture, wait to add the olive oil and seasonings until just before roasting.
Finish before serving: Add the lemon juice and parmesan after roasting for the freshest flavor.

Storing leftovers

Fridge: Store leftover roasted Brussels sprouts in an airtight container for up to 4 days.
Expect some softening: The Brussels sprouts will lose some of their crispness as they sit, but they’ll still taste great.
Keep them dry: Let the Brussels sprouts cool completely before covering and refrigerating to prevent excess condensation.
Reheating: The oven or air fryer is your best bet for reheating. The microwave also works in a pinch, but it may make the Brussels sprouts a little softer.

Freezing

Freeze if needed: Store the cooled Brussels sprouts in a freezer-safe container for up to 2 months.
Reheat from frozen: Pop them directly into the oven or air fryer until heated through, keeping in mind that they might be softer than freshly roasted sprouts.

FAQ

Brussels sprouts are best served fresh, but you can make them ahead of time if needed. Note that they may soften as they sit, so reheat them in the oven or air fryer before serving to help keep them crispy.

Simply omit the parmesan or substitute a dairy-free parmesan-style cheese. Nutritional yeast is another great option for a cheesy, umami flavor!

They’re mildly spicy at most. The red chili flakes add a gentle warmth, but you can easily reduce or omit them to suit your preference.

Too much moisture or an overcrowded baking sheet can cause Brussels sprouts to steam instead of roast. Dry them thoroughly, arrange them in a single layer, and place the cut sides down for the crispiest edges.

Fresh Brussels sprouts work best because frozen sprouts tend to release more water and may not get as crispy. If using frozen, roast them directly from frozen and allow a little extra cooking time.

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More healthy side dishes

Lemon Parmesan Roasted Brussels Sprouts

These Lemon Parmesan Roasted Brussels Sprouts are crispy, savory, and bright, with a touch of heat from red chili flakes. They're an easy side dish and ready in about 30 minutes!

Course Side Dish

Cuisine American

Prep Time 5

Cook Time 25

Total Time 30

Servings people

Calories 130kcal

Ingredients

1 lb Brussels sprouts trimmed and halved
2 tablespoons olive oil
2 teaspoons garlic powder
1/2 teaspoon red chili flakes optional
1/2 teaspoon salt
1/4 teaspoon black pepper
1 lemon juiced (about 2 tablespoons)
1/4 cup parmesan cheese

Instructions

Preheat the oven to 400°F (200°C).
Toss the Brussels sprouts with olive oil and seasonings, then spread them evenly on a parchment-lined baking sheet.
Bake for 25-30 minutes, until tender and crispy.
Finish with a squeeze of fresh lemon juice and a sprinkle of parmesan cheese.