Taco Bake Casserole

Ingredients (11)

• ✓ cooking spray (such as Pam®)
• + 1 ½ pounds ground beef add to pantry
• + 1 cup chopped onion add to pantry
• + ½ cup water add to pantry
• + 1 (1 ounce) package taco seasoning mix add to pantry
• + 1 (10 ounce) can refried beans add to pantry
• + ½ cup salsa add to pantry
• + 1 (6 ounce) can sliced black olives add to pantry
• + 1 (4 ounce) can diced green chiles add to pantry
• ✓ 15 taco shells, broken up, or more to taste
• + 2 cups shredded Cheddar cheese add to pantry