Mexican Casserole

tortillas
1 lb ground beef
packet of taco seasoning
can of refried beans
sour cream
sliced black olives
blended shredded cheese
Cook ground beef over medium high heat until no longer pink. Drain, add taco seasoning, and a little water. Mix well. Add can of refried beans and mix well. In a 9x13 casserole dish, spray bottle with Pam and layer with three tortillas (you may need to cut or trim them). Spoon half of the meat/bean mixture over tortillas. Spread sour cream and sliced black olives. Sprinkle cheese. Layer another 3 tortillas, repeat with meat/bean mixture and top with cheese. Bake in oven preheated to 350 degrees for about 45 minutes until cheese is bubbling and starting to brown.