In a large bowl toss broccoli and cauliflower with the olive oil, garlic powder, chili powder, and a little salt and pepper. Pop the veggies onto a baking sheet and roast for about 20 minutes or so or until lightly browned and tender.
In the meantime heat up your spaghetti squash (I popped my in the microwave for a minute or so).
Place spaghetti squash on a plate and top with roasted veggies, tomato sauce, and Parmesan cheese enjoy!!
Notes
*Note:
It's probably obvious, but to keep it strictly vegan and dairy-free, you'll want to skip the cheese.