Taco Doritos Casserole with Ground Beef, Cheese, and Corn - My Home Made Recipe

Ingredients

• 1 tablespoon olive oil, if needed
• 1 lb (450 g) lean ground beef
• 1 small yellow onion, diced
• 2 cloves garlic, minced
• 1 packet (1 oz / 28 g) taco seasoning
• 1/3 cup (80 ml) water
• 1 cup (240 g) chunky salsa
• 1 can (15 oz / 425 g) corn, drained
• 1 can (15 oz / 425 g) black beans, rinsed and drained
• 3/4 cup (180 g) sour cream
• 6 cups (about 220 g) lightly crushed Nacho Cheese Doritos, divided
• 2 1/2 cups (280 g) shredded cheddar or Colby Jack cheese, divided
• Cooking spray or butter, for the baking dish
• 1 cup chopped tomatoes
• 2 green onions, sliced
• 1/4 cup chopped cilantro
• Extra sour cream and salsa, for serving