Creating the Easy Seafood Casserole is as simple as following these clear steps:

1. Preheat Oven: Set your oven to 350°F (175°C) to prepare for baking.
2. Combine Seafood: In a large mixing bowl, gently fold together the cooked shrimp, fish chunks, and scallops.
3. Make Sauce: In another bowl, mix the cream of mushroom soup, sour cream, garlic powder, onion powder, salt, and pepper until well combined.
4. Combine Mixtures: Pour the soup mixture over the seafood and mix gently until all pieces are coated.
5. Add Cheese: Stir in half of the shredded cheddar cheese to the seafood mixture.
6. Transfer to Baking Dish: Pour the seafood and sauce mixture into a greased 9×13-inch baking dish.
7. Top with Crackers: Evenly scatter the crushed crackers over the seafood mixture for a crispy topping.
8. Sprinkle Remaining Cheese: Add the last half of the cheddar cheese on top of the cracker layer.
9. Bake: Place the baking dish in the oven and bake for 30-35 minutes, or until the casserole is bubbly and the top is golden brown.
10. Garnish: Once out of the oven, sprinkle fresh parsley on top for a pop of color and additional flavor.

With these simple steps, you’ll create an Easy Seafood Casserole that looks stunning and tastes even better!