Prepare the Beans - In a medium bowl, mix refried beans and ¼ cup sour cream until smooth. Evenly spread the bean mixture in a 9 by 13-inch baking dish.
Season the Sour Cream - In a separate medium bowl, stir together 2 cups of sour cream and taco seasoning. Evenly spread on top of the beans.
Add the Spice - Evenly spread the guacamole on top of the sour cream mixture. Spread the salsa on top of the guacamole.
Add the Cheeses - Evenly sprinkle the cheddar and Monterey jack cheese on top.
Add Fresh Toppings - Evenly sprinkle the tomatoes, olives, green onions, and cilantro on top. Serve immediately with tortilla chips or tightly cover and refrigerate.
Notes
Recipe Yield: 11 ¼ cups
Serving Size: ¼ cup
Make-Ahead: Can be made up to 3 days in advance. Tightly cover with plastic wrap, then foil, and refrigerate. Wait to add the green onions and cilantro for the freshest taste.
Layer Thickness: For thicker layers, use a 9 by 9-inch pan.