In a large skillet, brown ground beef, chopped onions and garlic, over medium heat. Drain fat. Add in the taco seasoning, Ro-tel, and the salsa. Stir to combine. Remove from heat and stir in the sour cream.
Pour half of the meat mixture into the bottom of greased 9×13 baking dish. Top with 1 cup of the cheese and half of the Doritos. Repeat the process with the remaining ingredients, topping with the remaining 1 cup of the cheese.
Cover with foil and bake for 20 minutes. Remove the foil and bake for 10 more minutes.
Top with optional garnishes.
Notes
Nutrition information is figured without optional garnishes.