- 4½ lb broccoli florets, cut into 1.5 inch pieces
- 4½ zucchini, sliced into half-moons
- 4½ red bell pepper, cut into 1 inch pieces
- 2½ red onion, cut into wedges
- 9 tbsp olive oil
- 3⅓ tsp salt
- 1⅛ tsp black pepper
- 2¼ tsp garlic powder
- 4½ pinch red pepper flakes, optional