Beef Enchilada Pie

Ingredients

• 1 lb. extra lean ground beef
• 1/2 onion, chopped
• 1 1/2 c. cooked kidney beans or 1 (4 oz.) can green chilies, diced
• 1 (14 1/2 oz.) can Mexican-style stewed tomatoes
• 6 oz. sharp reduced-fat Cheddar cheese, grated
• 1/3 tsp. garlic powder
• 1/4 tsp. chili powder
• 1 1/2 c. pinto beans, drained
• 1/2 c. cream of mushroom soup (condensed; low-fat)
• 6 corn tortillas
• nonstick cooking spray