Prepare the cauliflower – Wash, dry, and remove all greens from the cauliflower. Next, chop the cauliflower into 1 to 2-inch florets. Meanwhile, preheat oven to 425° F and line a large baking sheet with parchment paper or aluminum foil.

Toss cauliflower in olive oil – In a large mixing bowl or directly on the baking sheet, toss the cauliflower florets with olive oil, salt, and pepper. Arrange cauliflower florets in a single layer.

Bake – Transfer baking sheet to the oven and bake for approximately 25 minutes, or until fully cooked and just starting to brown at the edges. Optional: for extra crispy edges, set oven to broil and roast for 1-2 minutes.

Serve – Remove baking sheet from the oven, season with additional salt and pepper, and serve immediately.