2 (16 ounce) cans refried beans
1 (16 ounce) container sour cream
1 package shredded taco cheese
1 (1 1/4 ounce) package taco seasoning
2 tomatoes (optional)
green onion (optional)
chopped black olives (optional)
Mix package of taco seasoning and sour cream. Layer beans on bottom of cake dish, then sour cream mixture, add shredded cheese and any other toppings. Chill for 30 minutes. Serve with doritos or tostitos.