Preheat oven to 300 F. Chop cauliflower into small pieces, discarding the small crumbly florets. Try to use mostly the stem parts. Any is fine, so long as it holds together and doesn’t crumble. Place into a roasting pan or cast-iron skillet, toss in 3 tablespoons of olive oil, and bake at 300 F for 15-20 minutes, or until the bottoms are a little brown and caramelized.