- 2¼ lb broccoli florets, cut into 1.5 inch pieces
- 2½ zucchini, sliced into half-moons
- 2½ red bell pepper, cut into 1 inch pieces
- 1 red onion, cut into wedges
- 4½ tbsp olive oil
- 1⅔ tsp salt
- ½ tsp black pepper
- 1⅛ tsp garlic powder
- 2½ pinch red pepper flakes, optional