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Roasted broccoli with lemon Parmesan is one of those simple side dishes that always manages to make dinner feel so much more put together with almost no effort. It stars broccoli, a squeeze of fresh lemon to brighten everything up, and a sprinkle of Parmesan for a salty, savory finish. Throw in some chopped walnuts for an extra crunch, and suddenly you have a side dish that might just steal the spotlight on your plate.

Serve this with your favorite mains — it goes great with everything from casseroles to veggie burgers and beyond! You can also make it vegan by using dairy-free cheese or simply skip the Parmesan and finish it off with a little extra lemon and sea salt instead.

No matter how you make it, this roasted broccoli with lemon Parmesan is a quick and easy side that brings big, bold flavors to the dinner table.

Why you’ll love this recipe

Comes together fast for an easy, wholesome side dish
Rich in fiber, vitamins, and minerals
Bright lemon and Parmesan add bold flavor with minimal effort
Features heart-healthy ingredients, including walnuts and olive oil
Pairs well with everything from weeknight dinners to holiday meals

What you’ll need

Broccoli – Forms the nutrient-rich base of the dish that roasts into crisp, caramelized perfection
Olive oil – Helps the broccoli roast evenly and develop golden edges
Walnuts – Add a crunchy, buttery texture and rich, earthy flavor
Parmesan cheese – Brings a salty, savory finish that ties everything together
Lemon juice – Balances the richness of the cheese and nuts
Red chili flakes – Optional, but gives a subtle kick of heat

Ingredient substitutions

Broccoli – Cauliflower, broccolini, Brussels sprouts, green beans, or asparagus would all work well here, though roasting times may vary depending on the vegetable you choose.
Walnuts – Pecans, almonds, pistachios, pine nuts, sunflower seeds, or pumpkin seeds can all add a similar crunchy texture and nutty flavor.
Parmesan – You can also use Pecorino Romano, Asiago, feta, or goat cheese instead. For a vegan option, try dairy-free Parmesan or add a sprinkle of nutritional yeast.

Recipe tips

Don’t overcrowd the baking dish; giving the broccoli space helps it caramelize.

Roast until the edges are deeply golden for the best flavor and crisp texture.

Toss in the walnuts and Parmesan just before serving to keep the nuts crunchy and the cheese fresh.

How to make this recipe

Roast the broccoli: Add broccoli florets to a 9×13-inch baking dish. Drizzle with 2 tbsp olive oil, season with salt and pepper, and toss until evenly coated. Roast for 30 minutes, tossing halfway through, until the broccoli is tender and lightly browned on the edges.
Make the dressing: In a small bowl, whisk together the remaining 2 tbsp olive oil, lemon juice, salt, pepper, and red chili flakes (if using).
Finish and serve: Transfer roasted broccoli to a serving bowl or leave in the baking dish. Drizzle with the lemon dressing. Add chopped walnuts and Parmesan cheese, toss to combine, and serve warm.

FAQ

You can, but fresh broccoli gives the best texture. If using frozen, thaw and pat dry first to reduce excess moisture.

Yes. Roast the broccoli ahead and reheat in the oven or skillet, then add the lemon dressing, walnuts, and Parmesan right before serving.

Store leftovers in an airtight container in the refrigerator for up to 3 days. The broccoli will soften slightly as it sits.

This roasted broccoli with lemon parmesan pairs perfectly with dishes like veggie burgers, stuffed sweet potatoes, grain bowls, pasta dishes, or hearty bean-based casseroles.

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