Summer Squash Casserole with Nuts

A super yummy recipe found on http://www.squashrecipes.net/ and perfect as it is summertime and squash season here! (I had to make some changes: I substituted Paraguayan sandwich cheese for cheddar and walnuts that I brought back from the States for pecans)

Summer Squash Casserole With Nuts
Tasty squash casserole. Summer squash mashed and combined with green bell pepper, onion, egg, sugar, cheese, pecans, mayonnaise. Seasoned with salt and pepper. Topped with breadcrumbs and baked until golden. Ingredients - 1 pound Summer Squash, sliced, boiled until tender, drained
1/4 cup Butter
1/4 cup chopped Green Bell Pepper
1 tablespoon White Sugar
1/2 cup chopped Onion
1 Egg
1/2 cup Mayonnaise
Salt and Pepper, to taste
1/2 cup shredded Cheddar Cheese
1/2 cup Pecans, chopped
1/2 cup Bread Crumbs Preparation:
1. Preheat oven to 350 degrees.
2. Add squash and butter to a large mixing bowl and mash.
3. Add green bell pepper, chopped onion, egg, mayonnaise, salt, pepper, cheese and nuts to squash mixture.
4. Spoon into large baking casserole dish.
5. Top with breadcrumbs. Dot with butter.
6. Bake 40 minutes.