Prepare ground beef and taco seasoning according to package instructions. Use a potato masher to break ground beef into smaller crumbles. (This creates a more Taco Bell style ground beef) Set aside.

Heat oil in fry pan over medium/high heat. Fry each tortilla until lightly browned and crisped. Use just enough oil to grease the bottom of the pan.

Preheat oven to 375ºF

Place one tortilla on greased rimmed baking sheet. Top tortilla with refried beans, spread. Next, layer taco meat and salsa. Top with a second tortilla. Coat tortilla with enchilada sauce. Top with shredded cheese, olives, tomatoes and a little more cheese. Repeat this process 3 more times to make 4 Mexican Pizzas in total.

Bake pizzas 5-7 minutes to heat and melt cheese. Slice and serve topped with shredded lettuce, sliced green onions and sour cream.