Mix sour cream, salad dressing and taco seasoning and set aside. Spread refried beans on bottom of an 8 x 8 inch or larger pan. Spread guacamole on top of beans, then layer sour cream mixture. Next, layer shredded cheese, lettuce, tomatoes and olives.
Use this Mex Tex as a main dish or as a dip with chips. Spoon onto plate and enjoy. No cooking!