Simply delicious taco lasagna combines Tex Mex flavors with Italian design.
Brown the ground hamburger and diced onions in a skillet.
Using a round casserole dish, begin layering ingredients. Start with salsa on the bottom and add tortilla, beans, salsa, cheese, hamburger.
Repeat until dish is full or ingredients are used up, whichever comes first. Top with a layer of cheese and garnish with the black olives.
Bake at 350 degrees for 30 minutes.
Allow to cool 5 minutes, then serve. Top with sour cream.