Ensure the broccoli is fully thawed before beginning. To quickly thaw broccoli, microwave it at 50% power until no longer frozen but cool to the touch.
32 ounces frozen broccoli
Preheat oven to 350°F. Coat a 9x13-inch baking pan with nonstick cooking spray. Set aside.
In a large bowl, whisk the egg, cream of chicken soup, mayonnaise, garlic powder, onion powder, pepper, and paprika together.
1 large egg, 10.5 ounces cream of chicken soup, ½ cup mayonnaise, 1 teaspoon garlic powder, 1 teaspoon onion powder, ½ teaspoon ground black pepper, ½ teaspoon ground paprika
Add in the broccoli and cheddar cheese, and stir gently until the broccoli is well coated in the sauce.
2 cups freshly shredded cheddar cheese
Transfer to your prepared pan and smooth into an even layer.
Top with the crushed crackers and drizzle with butter.
1½ cups crushed Ritz crackers, ¼ cup unsalted butter
Bake for 35-45 minutes, until the crackers are golden and the casserole is warmed through.