Brown ground beef in a skillet with onion and garlic.
Add taco seasoning mix and 1/3 cup of water and simmer for 2 minutes. Stir in tomato sauce, water, milk, Rotel, salt, pepper, and cooked pasta. Stir in cheese and serve warm.
If you already have taco-seasoned ground beef in the freezer, this recipe can be done in about 15 minutes. If you don't have any stockpiled, go ahead and cook extra tonight and freeze it. Cooking 5 lbs. ground beef and seasoning it for the freezer takes less time than making 1 lb. ground beef 5 times and seasoning it for each recipe.