Preheat the oven to 400 degrees F. In a large bowl, toss the broccoli with olive oil, salt, black pepper and garlic. Spread the broccoli in a single layer on a rimmed baking sheet. Bake until florets are tender enough to pierce with a fork and the edges are browning, about 15 minutes.
Blanching Broccoli: Bring a large pot of water to a rapid boil. Add a heaping tablespoon of salt. Add the broccoli florets and cook until crisp-tender, 1 - 1 1/2 minutes. Plunge into into an ice water bath to stop cooking.