Brown ground beef with 1 pkg. Of taco seasoning.. In a large bowl mix 1 can of Rotel tomatoes, refried beans, and add the ground beef . In a baking dish crush the package of Doritos to completely cover the bottom of the dish. I usually use a 9 x 13" pan. Add the ground beef mixture over the chips. Sprinkle the cheese over the top. Bake at 350 degrees for 45 minutes or until golden and bubbly. Cut into squares and serve with sour cream or salsa. Enjoy!