Squash Casseroleis a fun, easy way to eat yellow squash. It is quick to whip up and can be used as a delicious side dish, which you could pair with an entree like Mississippi Pot Roast, Crockpot BBQ Pulled Pork, or make the casserole your main course for the ultimate comfort food.

squash casserole with a crispy top dished onto a plate

TheCheesy Squash Casserolerecipe is a perfect way to use up summer squash. It’s also an easy, quick recipe so what’s not to love?

Why You’ll Love This Recipe

Delicious Flavor:The combination of sautéed squash, onions, and crunchy topping creates a delightful mix of flavors and textures.
Easy Preparation:This recipe is incredibly straightforward, making it perfect for both beginners and experienced cooks. It’s a hassle-free way to makea satisfying dish.
Use of Summer Squash:It’s an excellent way to make the most of your summer squash harvest, ensuring none of it goes to waste.

Recipe Ingredients:

cutting board of ingredients for the squash casserole recipe consisting of summer squash cheese butter eggs onion crackers and a measuring cup of cream

Yellow squash:the base and star of the recipe!
Onion:this adds flavor and texture to the casserole
Butter:always a good option in my opinion, you’ll cook the squash and onions in it and then it adds to the creaminess in the casserole
Eggs:I use these to help thicken the casserole and they give it a nice thick custard
Milk:this helps to give it that great custardy/eggy texture
Seasonings:salt, garlic powder, cayenne pepper, ground black pepper are what I used to give this dish some flavor.
Sharp cheddar cheese:cheese adds flavor and creaminess to the baked dish
Buttery round crackers (such as Ritz):you are going to crush these up and put them on top and when they bake they make the most delicious crust on the top of the casserole, the crackers are so good with all of the other creamy aspects of the dish

See recipe card below for full information on ingredients and quantities

Popular Substitutions and Variations

You can usewhatever squashyou have on hand or prefer, but could also substitutezucchini.
Experiment withdifferent types of cheeselike cheddar, mozzarella, or gruyere to change the flavor profile.
Substitute dairy milk withalmond milk, soy milk, or even buttermilkfor a unique twist.
Swap out Ritz crackers for breadcrumbs, panko, or crushed potato chips for a different crunch.
Includecooked bacon bits or diced hamto make it heartier and moreprotein-packed.

How To Make Squash Casserole:

photo of a blue spotted baking dish with crumbly topped yellow squash casserole with one piece missing

Sautéthe onions and squash in the butter to help get some of the moisture out of the vegetables.You don’t want a soupy casserole!
Add the milk, eggs, seasoning, and cheese to a bowl andmix to combine.
Add the cooked squash into agreased pan, and then pour the egg mixture on top. Top the dish with crushed crackers and bake.
Serve warm and enjoy!

Frequently Asked Questions:

Can I freeze squash casserole?

Squash casserole is a great candidate to make ahead and freeze. Make the casserole according to the instructions but don’t top with the ritz crackers or bake it. Cover the casserole in foil or a tight plastic wrap for optimal freshness. When you are ready to eat the frozen casserole, I suggest letting it thaw the night before in the refrigerator. And don’t forget to top with the ritz crackers before baking!

How do you keep squash casserole from getting watery?

This is why we cook the squash and onion together in the skillet before adding it to the casserole, it helps to remove extra water from the vegetables. Constantly stir the squash to try and cook until the moisture cooks off.

Do you peel yellow squash before cooking?

You don’t need to peel yellow squash prior to cooking because the skin is soft and will continue to get more soft as it is cooked, and will be fine to eat.