Ingredients:
– 1/2 pound crab meat, shredded 
– 1/2 pound cooked shrimp, chopped 
– 1 cup cooked rice 
– 1 cup shredded cheddar cheese 
– 1/2 cup mayonnaise 
– 1/4 cup sour cream
– 1/4 cup chopped green onions 
– 1 tablespoon lemon juice 
– 1 teaspoon Old Bay seasoning 
– 1/2 teaspoon garlic powder 
– Salt and pepper to taste 
– 1/2 cup crushed butter crackers (for topping) 
– 2 tablespoons melted butter (for topping) 
Preparation:
1. Preheat the oven: Set your oven to 350°F (175°C). Grease a 9×9-inch baking dish. 
2. Prepare the mixture: In a large bowl, combine the crab meat, cooked shrimp, cooked rice, shredded cheddar cheese, mayonnaise, sour cream, chopped green onions, lemon juice, Old Bay seasoning, garlic powder, salt, and pepper. Mix well.
3. Transfer to baking dish: Spoon the mixture into the prepared baking dish, spreading it evenly. 
4. Prepare topping: In a small bowl, mix the crushed butter crackers with melted butter. Sprinkle this mixture evenly over the casserole.
5. Bake: Bake in the preheated oven for 25-30 minutes, or until the casserole is bubbly and the topping is golden brown. 
6. Cool and serve: Allow the casserole to cool slightly before serving. Enjoy your delicious Crab and Shrimp Casserole! 
This comforting casserole combines seafood and creamy flavors with a crispy topping for a hearty meal!