Creating a delicious Pineapple Casserole is as simple as following these steps:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C).
2. Prepare the Pan: Grease a 9×13-inch baking dish with butter or cooking spray.
3. Drain Pineapple: Open the cans of crushed pineapple and drain well to remove excess juice.
4. Mix Ingredients: In a large bowl, combine the drained pineapple, granulated sugar, beaten egg, and ground cinnamon (if using). Mix thoroughly until well combined.
5. Add Cheese: Gently fold in the shredded cheddar cheese until incorporated.
6. Transfer to Dish: Pour the pineapple mixture into the prepared baking dish, spreading it evenly.
7. Prepare Topping: In another bowl, combine the crushed Ritz crackers with the melted butter. Mix well to coat the crackers evenly.
8. Top the Casserole: Sprinkle the crushed cracker mixture over the pineapple mixture in the baking dish.
9. Bake: Place the baking dish in the preheated oven. Bake for 30-35 minutes or until the top is golden brown and the casserole is bubbly.
10. Cool and Serve: Remove from the oven and let it cool for a few minutes before serving.

These steps will guide you in creating an incredible casserole that’s a true showstopper.