Heat oven to 350°F.
Pour about 1/2 cup of the enchilada sauce into a 9x13-inch baking dish and save the rest for later.
1 19-ounce can red enchilada sauce
Brown the ground beef with the onions in a large saucepan; drain.
1 pound ground beef, 1 tablespoon minced onion
Stir in the refried beans.
1 16-ounce can refried beans
Scoop 1/4 cup of the meat and bean mixture onto each tortilla. NOTE: You will have leftover meat/bean mixture, which you'll use in the next step. Sprinkle each with 2 tbsp cheese, roll up the tortilla, and place into the 9x13 pan.
8 8-inch flour tortillas, 2 cups shredded cheddar cheese
Add the remaining enchilada sauce to the meat and bean mixture; stir well.
1 19-ounce can red enchilada sauce
Pour the sauce over the enchiladas and spread to an even layer.
Sprinkle the remaining cheese on top and bake for 20-25 minutes or until bubbly.
2 cups shredded cheddar cheese
Top with lettuce, tomatoes, sour cream, avocados and cilantro, if desired.
Toppings