In a skillet, cook the ground beef, diced green pepper, chopped onion, and minced garlic over medium heat until the beef is no longer pink. Drain off any excess grease.

Add the cooked white rice, undiluted condensed tomato soup, cubed process cheese (Velveeta), chili powder, salt, and pepper to the skillet.

Cook the mixture over medium heat, stirring occasionally, until the cheese is completely melted and all ingredients are well combined.

Transfer the cheesy rice mixture to a 3-cup baking dish.

Cover the baking dish with a lid or aluminum foil.

Bake in a preheated oven at 350°F (175°C) for 30-35 minutes, or until heated through and bubbly.

Let stand for 10-15 minutes before serving.