Home Side DishesCheesy Squash, Zucchini, and Corn Casserole

Cheesy Squash, Zucchini, and Corn Casserole

Name: Cheesy Squash, Zucchini, and Corn Casserole
Prep time: 20 min
Cook time: 25 min
Yield: 9
Cuisine: Southern
Ingredients: 4 cups yellow squash (1/4-inch thick); 4 cups zucchini (1/4-inch thick); 1 1/2 cups coarsely chopped sweet or yellow onion; 4 cups chicken broth; 2 cups cooked corn; 1/2 cup mayonnaise; 1/2 cup sour cream; 2 large eggs,, lightly beaten; 2 tablespoons salted butter,, melted; 1 teaspoon salt; 1/2 teaspoon pepper; 2 cups shredded sharp cheddar cheese; 1 1/2 cups coarsley crushed Ritz crackers

Cheesy Squash, Zucchini, and Corn Casserole is a creamy, cheesy casserole full of summer vegetables with a cracker crumb topiing.

Prep20 min
Cook25 min
Serves9
Rating5.0

Cheesy Squash, Zucchini, and Corn Casserole is a creamy, cheesy casserole full of summer vegetables. Lots of cheddar cheese and buttery cracker crumbs make this one heck of a side dish.

Spoon scooping Cheesy Squash, Zucchini, and Corn Casserole.

I love recipes that turn vegetables into comfort food. Squash and zucchini casseroles are very popular but you rarely see corn added to them. I don’t know why because it’s a fabulous flavor combination. I love the sweetness that the corn adds.

A combination of mayonnaise, sour cream, and melted butter make this casserole wonderfully creamy. Some eggs and crushed crackers are added to the casserole to give it more substance.

I use all cheddar cheese, but a combination of cheddar cheese and mozzarella or Parmesan cheese would be equally delicious. There’s also sweet onion added for even more flavor.

How To Make Cheesy Squash, Zucchini, and Corn Casserole

(More complete instructions in recipe card below.)

Chicken broth being poured into pot with squash, zucchini, and onion.

Simmer the squash, zucchini, and onion in chicken broth until tender. Drain and then add corn.

2. In a mixing bowl, stir together mayonnaise, sour cream, eggs, butter, salt and pepper. Mix in 1 1/2 cups of the cheese.

3. Add the squash and zucchini mixture and stir.

4. Transfer half the zucchini mixture to baking dish and top with half the cracker crumbs. Add remaining zucchini mixture and top with remaining cracker crumbs and cheese.

5. Bake for 25 minutes.

Squash and Zucchini Casserole with corn in a baking dish.

Recipe Tip

It is important to pre-cook the squash, zucchini, and onion or else it will be crunchy and lacking in flavor in the finished casserole dish. I briefly simmer them in some chicken broth because it helps add flavor. You could just steam them or saute them in some butter or oil until crisp-tender. You don’t want them super soft because they will continue to cook in the oven.

If you have a bounty of zucchini or squash on your hands, give this Cheesy Squash, Zucchini, and Corn Casserole a try. You won’t be disappointed.