To make Mexican Stuffed Peppers, start by cutting the tops off of bell peppers and then removing the seeds and core of the pepper. Once cleaned, place your peppers on a plate and cover them with a damp paper towel. Cook for 2-3 minutes on High and when done, set aside.
While your peppers are pre-cooking, add chicken stock to a large covered cooking pot and bring to a boil. One boiling, add in your brown rice, recover your pot and remove the pot from the heat. Let your rice cook while you prepare your meat mixture.
Grab a large skillet and brown your ground beef over Medium High heat until cooked and no longer pink. Drain the grease and return to the stove top. Add to the ground beef, taco seasoning, corn, black beans, Rotel tomatoes, chopped onion, garlic, seasonings and green chiles. Stir to combine and then add in your cooked rice. Stir in chopped cilantro and half the Monterey Jack cheese.
Using a large spoon, spoon your Mexican Stuffed Pepper mixture into your bell pepper shells and place standing up in a 9x13 baking pan. Cover pan with foil and bake for 30 minutes at 350 degrees. Remove foil, cover tops of your stuffed peppers with the remaining cheese and then return to the oven for 5-10 minutes or until cheese has melted. Serve immediately.