1. Chop onion and green bell pepper.2. Cook ground beef with onion and bell pepper and add chili powder, salt, and pepper.3. While the ground beef is cooking cube the Velveeta cheese and the Colby jack cheese.4. Put the hamburger mixture on the bottom of the crockpot. Then top with cream of mushroom soup and Rotel tomatoes. Last top with all the cheese cubes and green chilis.5. Cook on high for 1 1/2 hours and then stir. Cook another hour stirring occasionally until all the cheese is melted and it is hot.6. Enjoy on tortilla chips. It also makes a delicious topping for any other Mexican dish.