Enchilada Casserole

Ingredients

• 1 medium onion
• 2 lb. ground beef
• 1 c. whole corn (Mexican style)
• 2 cans tomato sauce
• 1 c. enchilada sauce
• 1 tsp. rosemary
• 1 tsp. oregano
• 1 tsp. salt and pepper
• 1 pkg. tortillas
• 1/2 to 1 lb. sharp cheese