Preheat oven to 375 F.

Chop broccoli heads into even, bite size pieces. Toss with olive oil, and lay down on a baking sheet. Sprinkle with salt and freshly cracked black pepper.

Roast for 5-6 minutes, and toss again half way through. The broccoli should be roasted, but still slightly crunchy.

Squeeze lemon over broccoli before serving.