In a pan, cook the ground beef and onion until the onion is soft.

Remove excess grease if needed..then add taco seasoning and garlic, rotel, black beans and corn; mixing until it's all combined.

Let it cook a couple minutes before adding in a handful of your crushed Doritos (between 1-2 cups) and half of the cheese.

Remove from heat and mix until combined and the cheese is melted.

Next, in a 9x13 pan, pour the mixture out evenly.

Cover with the remaining cheese and top with the rest of your Doritos evenly.

Bake for 5-10 minutes or until the top is golden brown.

Lastly, remove the pan from the oven and let it rest 5-10 minutes before topping with lettuce and sour cream to serve.