Preheat the oven to 450°F. Line a baking sheet with parchment paper.
Spread the frozen broccoli out on the baking tray. Spray with cooking spray. Toss to coat.
Roast for 5 minutes. Season with salt and pepper and stir. Return to the oven and bake for an additonal 10-12 minutes or until the broccoli is heated and the edges are slightly browned.
Notes
Frozen broccoli is softer in texture than fresh broccoli. Cook broccoli right from frozen. Parmesan cheese can be added and the broccoli can broiled just before serving.Keep leftover roasted broccoli in an airtight container in the refrigerator for 5 days.