1 cup shredded Cheddar cheese
1/2 pound shredded lettuce
3 tablespoons sour cream
1/4 teaspoon dried minced onion
1 tablespoon tomato paste
1 (8 ounce) can refried beans, divided
1 (4 ounce) can diced tomatoes with liquid
2 tablespoons unsalted butter
Preheat oven to 350 degrees F (175 degrees C).
In a medium bowl, mix shredded cheese and lettuce. Arrange half of the refried beans in a single layer on an ungreased baking sheet. Spread half of the mixture over the lettuce, then spoon half of the salsa over the lettuce. Sprinkle with half of the cheese mixture. Repeat with remaining beans and cheese.
Spread half of the taco sauce over the lettuce and cheese mixture. Spread half of the salsa over the cheese mixture. Top with half of the taco seasoning mixture. Sprinkle with black olives and half of the taco seasoning mixture.
Bake in preheated oven for 20 minutes, or until heated through.