Cook brown rice according to their instructions.
In a large pan, heat the olive oil until hot. Add minced garlic and roast until aromatic. Sweat onions until lightly browned around the edges.
Add mushrooms to the pan and cook off the water. Add spices and mix to coat the mushrooms. Add carrots and cook until relatively soft. Mix in cooked rice.
Preheat oven to 450 degrees Fahrenheit.
Take the red peppers and cut off the tops and core out the seeds from the inside.
Fill each pepper with the mushroom / rice mix. Top with shredded Monterey jack cheese. Cover each pepper with aluminum foil.
Bake for 20 minutes.