- 5¾ 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
- 11½ tbsp olive oil
- 4⅓ tsp salt
- 1½ tsp black pepper
- 2¾ tsp garlic powder
- 6 pinch red pepper flakes, optional