2. In a frying pan, heat olive oil over medium heat. Add cubed tempeh and cook until golden brown.
3. In a mixing bowl, combine cooked tempeh, broccoli, carrots, bell peppers, and tomato sauce. Season with garlic powder, onion powder, salt, and pepper.
4. Transfer the mixture to a baking dish and spread evenly.
5. Bake in the preheated oven for 30-40 minutes, until vegetables are tender.