Paula Deen's Flavorful Chicken Casserole

Ingredients

• 3 cups cooked shredded chicken
• 1 (10.5 oz) can cream of chicken soup
• 1 (10.5 oz) can cream of mushroom soup
• 1 cup sour cream
• 1 cup mayonnaise
• 1 cup shredded cheddar cheese
• 2 cups cooked and drained egg noodles
• 1 (14.5 oz) can diced tomatoes, drained (optional)
• 1 tsp garlic powder
• 1 tsp onion powder
• Salt
• pepper
• 1 cup crushed cornflakes
• 2 tbsp melted butter