- 6 lb broccoli florets, cut into 1.5 inch pieces
- 6 zucchini, sliced into half-moons
- 6 red bell pepper, cut into 1 inch pieces
- 3 red onion, cut into wedges
- 12 tbsp olive oil
- 4½ tsp salt
- 1½ tsp black pepper
- 3 tsp garlic powder
- 6 pinch red pepper flakes, optional