THIS CAN'T BE SQUASH CASSEROLE

This Can't be Squash Casserole image

Provided by @MakeItYours

Number Of Ingredients 12

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cooking spray
4 pounds yellow squash, sliced
1/4 cup butter
1/2 cup chopped onion
1 (10.75 ounce) can cream of mushroom soup
1 cup Cheddar cheese
1 cup seasoned bread crumbs
1/2 (10.75 ounce) can milk
1/2 cup mayonnaise
1 teaspoon white sugar
2 eggs, beaten
salt and ground black pepper to taste

Steps:

Preheat oven to 350 degrees F (175 degrees C). Spray a 9x13-inch casserole dish with cooking spray.
Bring a large pot of salted water to a boil; cook squash in the boiling water until very tender, 10 to 15 minutes. Drain and transfer squash to a large bowl; mash until evenly smooth.
Heat butter in a skillet over medium heat; cook and stir onion in the melted butter until tender, 5 to 10 minutes. Mix onion, cream of mushroom soup, Cheddar cheese, bread crumbs, milk, mayonnaise, sugar, eggs, salt, and pepper into mashed squash. Spread mixture evenly into the prepared casserole dish.
Bake in the preheated oven until bubbling and edges are lightly browned, 45 minutes to 1 hour.