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