How To Make Squash Casserole

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Let’s learn how to make squash casserole. This recipe is so easy and features that garden-fresh squash taste, melted cheese, and irresistibly buttery cracker crumbs.

Bowl of squash casserole

I will be the first to admit, I am a recent convert to squash and subsequently this Southern squash casserole recipe. However, in my defense, I would like to say that I never actually tried it until a few years ago. I don’t know what exactly held me off. Maybe it was the weird look of it, the odd name, or the fact that the same old folks who liked to drink buttermilk by the glassful and eat things like livers and poke sallet loved it so very much. I’m not sure exactly what it was which deterred me from squash but I do know that when I finally did taste it, I was won over in the first bite.

Squash casserole is one of those dishes that varies so widely in recipes. I swear there are at least a hundred different variations out there. This one is my favorite. Gooey cheese, buttery cracker crumbs adding a hint of crunch, and the taste of garden-fresh squash (even though I do use frozen squash most of the time). Fortunately, this is a cinch to make and very filling for a side dish.

Alas, kids will likely give it a wide berth, but if they had any decent judgment in things they wouldn’t need parents, now would they?

Ingredients for squash casserole.

Recipe Ingredients

  • Cheddar cheese
  • Onion
  • Milk
  • Eggs
  • Butter
  • Ritz crackers (or generic)
  • Squash

How to Make Squash Casserole

Add water to skillet.

Pour about a cup and a half of water into a large skillet.

Add onions to skillet.

Add diced onion…

Add squash to skillet and cook until tender.

And yellow squash.

Cook over medium heat until squash and onions are tender (about 5 to 10 minutes).

Drain the water.

Crush Ritz crackers in a bowl.

Meanwhile, back at the ranch… crush your crackers in a bowl.

Add cheese to mixing bowl and stir.

Add shredded cheese and stir.

Season with salt and pepper.

Season with pepper and salt.

Beat together milk and eggs in separate measuring cup.

Crack your eggs into the glass of milk and stir well with a fork.

Add butter to squash in skillet and let it melt.

Add half a stick of butter to your squash and let it melt.

Add milk mixture to squash in the skillet.

 Then pour in the egg mixture.

Stir up squash casserole ingredients in skillet.

Stir that up.

Stir in half of the cracker and cheese mixture.

Stir in half of the Ritz cracker and cheese mixture.

Pour squash casserole into a casserole dish.

Top squash casserole with remaining crackers and dot with butter.

Top with remaining cracker/cheese mixture and dot with butter. For me, dotting with butter means putting a few globs on top!

Squash casserole out of the oven.

Bake at 350 for 25 to 30 minutes or until golden brown.

scoop of squash casserole

Dig in!! Enjoy this delicious old-school squash casserole recipe.


Store casserole leftovers in an airtight container in the fridge for up to 4 days. However, it can get soggy over time, so it’s best to eat ASAP. Reheat in the microwave, oven, or air fryer. Alternatively, store leftovers in the freezer for up to 3 months. However, once again the casserole might be soggy once thawed.

Recipe Notes

  • Yellow squash and zucchini are similar vegetables and can be used interchangeably in this recipe. So substitute all the squash for zucchini or use a combination of both to make zucchini and squash casserole.
  • If you want to add even more vegetables to your casserole, saute some diced red bell pepper with the other veggies in the skillet.
  • Feel free to substitute the cheddar cheese for another type of cheese, like Monterey Jack, Colby, or mozzarella cheese.
  • You may also like adding some fresh herbs to your casserole. Chop them and add them to the skillet with the butter. Options include parsley, thyme, oregano, basil, and chives.
  • If you don’t have access to Ritz crackers, alternatives include corn flakes, panko bread crumbs, or crumbled croutons.

Recipe FAQs

Should I use fresh squash or frozen squash in my casserole?

I use fresh squash when it is given to me but if I am buying it, I just get frozen squash. Why? Well, I’m glad you asked that ~snickers~. I’ve found the quality and size of fresh squash in the grocery produce section to vary widely. It is rare to be able to find any decent-sized squash that is still somewhat firm and if you do they are priced out the wazoo for the quantity you need.

When you buy frozen squash, you get nice thick slices and a quality that has never been less than excellent from what I’ve seen. I can buy a bag of frozen squash for less than two dollars. To yield the same amount of nice thickly-sliced squash from the produce section, I’d pay twice as much and likely end up with overripe squash anyway. Perhaps it is different where you are but that is how it is in Bama.

What do you serve with yellow squash casserole?

This casserole is the perfect side dish to accompany all kinds of main meals, like turkey breast, roast chicken, glazed ham, fried chicken, fried catfish, and pork chops. It’s also delicious served with other side dishes, such as mashed potatoes and macaroni salad.

Can I make my cheesy squash casserole ahead of time?

Yes, you can assemble the casserole in advance and then cover and refrigerate it for up to 24 hours. When it’s time to bake, let the dish come to room temperature for at least 30 minutes before it goes into the oven. You can also cook the casserole and then reheat leftovers as well.

You might also enjoy these recipes!

How To Make Squash Relish

Simple Zucchini and Squash Recipe

Simple Squash Recipe

Cornbread Casserole Recipe

Sloppy Joes Casserole Recipe

scoop of squash casserole

Squash Casserole

This squash casserole recipe includes gooey cheese, buttery cracker crumbs adding a hint of crunch, and the taste of garden-fresh squash.
Prep Time: 20 minutes
Cook Time: 30 minutes
Total Time: 50 minutes
Course: Appetizer
Cuisine: American
Keyword: casserole, squash
Servings: 8
Calories: 171kcal


  • 4 cups yellow squash, sliced
  • 1/2 cup onion
  • 35 Ritz crackers (a sleeve of buttery round Ritz crackers)
  • 1 cup shredded cheddar cheese
  • 2 eggs, beaten
  • 3/4 cup milk
  • 1/4 cup melted butter
  • 1 teaspoon salt
  • ground black pepper to taste
  • 2 tablespoons butter


  • Preheat oven to 350. Put the squash, onion, and about a cup and a half of water in a large skillet over medium heat. Cook until the squash and onions are tender (about 5 to 10 minutes). Drain well. Add half stick of margarine and let melt.
    4 cups yellow squash, sliced, 1/2 cup onion, 1/4 cup melted butter
  • In a medium bowl, crush the crackers and stir in the shredded cheese. Add salt and pepper and stir. Then stir half of the cracker mixture into the squash.
    35 Ritz crackers, 1 cup shredded cheddar cheese, 1 teaspoon salt, ground black pepper to taste
  • In a small bowl, mix together the milk and two eggs. Pour into the squash mixture and stir well. Pour into a casserole dish. Top with the remaining cracker topping and dot with remaining butter. Bake at 350 for 25-30 minutes, or until the top is golden brown.
    2 eggs, beaten, 3/4 cup milk, 2 tablespoons butter


Calories: 171kcal | Carbohydrates: 13g | Protein: 8g | Fat: 10g | Saturated Fat: 5g | Cholesterol: 59mg | Sodium: 533mg | Potassium: 253mg | Fiber: 1g | Sugar: 5g
Tried this recipe?Mention @southernplate or tag #southernplate!



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  1. Good instructions , I will try it today. Like you I was never interested before thinking it was a soggy mess.

  2. Hi, I just found this recipe and all I have to say is Holy cow. Just about all my family has passed away and being from Texas I grew up on this casserole and have been looking for one that was real close to the one I grew up eating and THIS IS IT. Thank you Christy. I just kinda knew I might find it here. Thank you sooooooo much for posting. I’m just sorry I didn’t find this before but grateful that I’ve found it now.

  3. I have never seen frozen squash in the stores here in California! What’s up with that? I grow it every year but didn’t even know it could be frozen. Thanks Chisty!

  4. I started following your blog specifically because of this recipe. I knew that anyone that understood what a true southern squash casserole was had to be a real southern cook. I made this for dinner tonight… just like my Aunts and Gran use to make. I replaced the Ritz with Cheez-it crackers, that was our family thing. It was just as I remembered from my childhood. Thank you for posting this recipe. I have been looking for it for quite some time now.

  5. I grew up eating this, except my mama doesn’t put milk in it. it’s not a holiday, until she makes some. i made some last night actually.

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