- 3 lb broccoli florets, cut into 1.5 inch pieces
- 3 zucchini, sliced into half-moons
- 3 red bell pepper, cut into 1 inch pieces
- 1½ red onion, cut into wedges
- 6 tbsp olive oil
- 2¼ tsp salt
- ¾ tsp black pepper
- 1½ tsp garlic powder
- 3 pinch red pepper flakes, optional