20-Minute Roasted Parmesan Cauliflower

Golden-brown roasted cauliflower florets tossed with olive oil, salt, and pepper, then finished with grated Parmesan-Romano cheese. The high-heat roasting creates crispy, caramelized edges while keeping the interior tender. Perfect as a healthy side dish for weeknight dinners or holiday meals. This simple preparation lets the natural sweetness of the cauliflower shine through, enhanced by the nutty, salty cheese.
Ingredients
- 6 cups fresh or frozen cauliflower florets, thawed if frozen
- 1 tablespoon olive oil
- ½ teaspoon kosher salt
- ½ teaspoon fresh ground black pepper
- ¼ cup Parmesan-Romano cheese, gratednutritional yeast3:1vegandairy-freedairy-free
creates cheesy flavor without dairy
Instructions
- 1
Preheat the oven to 450°F
- 2
Combine cauliflower, oil, salt, and pepper in a large bowl
- 3
Toss ingredients well to combine
- 4
Transfer mixture onto a large baking sheet
- 5
Spread into a single layer
- 6
Roast in the oven, tossing occasionally, until golden brown for about 15 minutes
- 7
Remove baking sheet from oven
- 8
Place roasted cauliflower into a serving bowl
- 9
Sprinkle cheese over the cauliflower
- 10
Toss well to mix the cheese
Tips
Don't overcrowd the baking sheet - use two sheets if needed for even browning
Pat thawed frozen cauliflower dry with paper towels to prevent steaming
Add the cheese after roasting to prevent burning and maintain its flavor
Good to Know
Refrigerate for up to 4 days in an airtight container
Can be prepped and seasoned up to 4 hours ahead, roast just before serving
Serve immediately while hot for best texture and flavor
Common Mistakes
Don't add cheese before roasting to avoid burning
Avoid overcrowding the pan to prevent steaming instead of roasting
Substitutions
Dairy-Free Swaps
General Alternatives
FAQ
Can I use frozen cauliflower instead of fresh?
Yes, just make sure to thaw completely and pat dry with paper towels to remove excess moisture before roasting.
What if I don't have Parmesan-Romano cheese?
Regular Parmesan works perfectly, or try Pecorino Romano for a sharper flavor. Nutritional yeast makes a good dairy-free substitute.
How long will leftovers keep in the refrigerator?
Store covered in the refrigerator for up to 4 days. Reheat in a 400°F oven for 5-7 minutes to restore crispiness.