Make the herb & butter Knorr rice side. Follow the instructions from the package.
In a pan, saute onions and mushroom then stir in the leftover taco meat and season with garlic powder, salt & pepper. (If there's no leftover meat, brown 1/2 pound of ground beef, then add onions, mushrooms, and seasonings to sauté.) Combine the meat mixture and rice side together.
Stir them together.
Preheat oven to 350°. Cut the green peppers in half and discard the seeds.
Stuff the green peppers with the rice mixture. Lay them into a foil-lined sheet pan. Bake it in the oven for 25 minutes.
Take them out of the oven and sprinkle cheese on top. Return the pan into the oven to bake for another 5 minutes.
