Preheat your oven to 350°F (175°C) and grease a 2-quart baking dish with butter or cooking spray.

In a large pot, boil water and add sliced yellow squash and chopped onion. Cook for 5 minutes until tender, then drain and cool slightly.

In a mixing bowl, combine the cooled squash and onion with cheddar cheese, crushed crackers, milk, eggs, melted butter, salt, pepper, garlic powder, onion powder, and paprika. Stir until creamy and well blended.

Pour the mixture into the prepared baking dish, spreading it evenly with a spatula.

Bake for 30 to 35 minutes until the top is golden brown and the center is set.

Allow it to cool for about 5 minutes before serving.