In a medium bowl, mix together the crushed pineapple, mayonnaise, cheddar cheese, pecans, Monterey Jack cheese, and sour cream. Pour into a 9x13 inch baking dish.
In a small bowl, mix together the butter and bread crumbs. Sprinkle over the top of the casserole.
Bake in preheated oven for 30 minutes, or until golden brown.
Interesting Facts
This casserole is a great way to use up leftover cheese.
You can use any type of cheese you have on hand for this recipe.
Pineapple is a great source of vitamin C and other important vitamins and minerals.