Baja Lasagna

Ingredients

• 1 lb ground beef
• 1/4 cup chopped onion
• 2 -3 cloves fresh minced garlic (optional)
• 2 (14 1/2 ounce) cans ready-cut tomatoes
• 1 (3 ounce) can diced green chilies
• 1 cup sliced fresh mushrooms
• 2 2/3 cups canned pinto beans, drained
• 1 tablespoon chili powder
• 1 teaspoon cumin
• 8 corn tortillas, cut into 1 inch strips
• 2 -3 cups cheddar cheese, shredded
• 1 cup sour cream