Pulse florets in your food processor until they are about rice-sized (you may need to do this in two or three batches).
Pour "rice" onto baking sheets (I use two sheets per head of cauliflower) and drizzle lightly with olive oil.
Toss until olive oil is well incorporated, then spread into a thin, even layer.
Roast on the middle rack(s) at 425 degrees for 15 minutes. Toss and re-spread, then roast an additional 5-10 minutes, until cauliflower is starting to brown.
Enjoy!
Video
Notes
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