Enchilada Pie

Ingredients

• 2 lbs ground beef
• 1 medium onion, finely chopped
• 1/2 teaspoon garlic powder
• 1 (8 ounce) can tomato sauce
• 2 cups canned whole tomatoes, chopped
• 1 (4 ounce) can chopped green chilies
• 1 (1 1/2 ounce) package taco seasoning mix
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 1 tablespoon chili powder
• 1 (14 ounce) package corn tortillas
• 1 (10 1/2 ounce) can cream of chicken soup
• 3/4 cup milk
• 2 cups shredded cheddar cheese