Preheat Oven to 425 degrees.
Spray baking sheet with cooking spray. Place halved peppers on baking sheet and spray with cooking spray. Roast in oven for about 5 to 8 mins.
Meanwhile add Olive oil to a large skillet. Cook meat until brown and carmelized; about 5 minutes. Add oinion and cook for 2 mins. Then add the garlic. Season the meat and oinion mixture with the cumin, salt, pepper, and hot sauce. Add the cooked rice. Then the veggies (in this case mushrooms & broccoli).
Take Bell pepper's out of the oven let cool for 5 mins. and fill with the stuffing mixture. You can freeze or save for another day at this point.
When ready to eat. Place stuffed peppers on a greased baking sheet and bake for 20 to 25 minutes on 425 degrees or until hot.