Mom's Tortilla and Black Bean Casserole

1 lb ground beef
2 cups chopped onion
1 1/2 cup chopped green pepper
1 14 ounce crushed tomatoes
3/4 cups salsa
2 15 ounce cans black beans
12-14 corn tortilla's
2 cups shredded cheddar cheese
sour cream and black olives optional

In a skillet brown hamburger then add onions and peppers. Salt and Pepper to taste.
Add tomatoes and beans and cook 5-10 minutes over med-high heat.

In a deep casserole dish layer...
Tortilla's (may need to overlap) I cut tortilla's in half and then layered them.
Next add hamburger mixture to cover tortilla's,
Then add salsa, sour cream, olives, then top with grated cheese and repeat.
Top layer should end up being cheese sprinkled with olives if desired.

Bake 375 30 minutes or until top is golden bubbly