Easy Enchilada Casserole

INGREDIENTS

• 1 lb ground beef or 1 lb ground turkey
• 1 cup chopped onion (1 small)
• 2 garlic cloves, finely chopped
• 1 3/4 cups thick & chunky salsa
• 1 3/4 cups refried beans
• 1 1/4 cups enchilada sauce (10-ounce can)
• 1/2 cup sliced ripe olives
• 10 (6 inch) corn tortillas, sliced in half, divided
• 2 cups shredded mild cheddar cheese, divided (8 ounces)
• sliced green onion (optional)