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Export 5 ingredients for grocery delivery
Step 1
Preheat oven to 400 degrees.
Step 2
Spread cauliflower and onion out in a single layer on a 4-sided baking sheet.
Step 3
Drizzle with olive oil and season with salt and pepper.
Step 4
Roast for 20 to 25 minutes in the preheated oven.
Step 5
Remove from oven and sprinkle with Parmesan. Serve hot.