Yellow Squash Casserole

This yellow squash casserole is a classic Southern side dish made with tender squash, cheddar cheese, and a buttery cracker topping baked until golden and crisp. I’ve made this recipe for everything from weeknight family dinners to holiday meals, and it’s always one of the first dishes to disappear from the table.

If you’re looking for yellow squash recipes that make the most of fresh summer squash, this casserole is an easy favorite. Steaming the squash before baking helps keep it tender, while the cheesy filling and buttery cracker topping create the perfect balance of creamy and crunchy textures. Best of all, this squash casserole can be assembled ahead of time, making it a great option when you’re planning a busy dinner or feeding a crowd.

Why This Recipe Works

Some squash casseroles end up watery, bland, or heavy. This recipe keeps things simple and focuses on the little details that make a big difference.

• Steaming the squash first helps control moisture. The squash becomes tender before baking, which helps create a creamy casserole instead of a watery one.
• The cracker topping does double duty. Ritz crackers add buttery flavor throughout the casserole and create the golden, crunchy topping everyone loves.
• Cheddar cheese adds flavor. The cheese makes the filling rich and satisfying while still letting the fresh squash shine.
• It’s easy to make ahead. You can assemble the casserole in advance and bake it just before dinner, making it perfect for holidays, potlucks, and busy weeknights.
• The texture is the best part. Every bite combines tender squash, creamy filling, melty cheese, and crisp cracker topping for the perfect balance of flavors and textures.

What Readers Are Saying

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“So good! My hubby absolutely loved it. Will be a family favorite!!!” – Tami

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“This recipe is so good and was so easy! The only thing I would do different is use a slightly smaller dish so that it’s a little bit deeper. My husband and I really liked it and it’s great as leftovers too!” -Patty

Ingredients

Yellow Squash: Fresh yellow squash gives this casserole its classic flavor and tender texture. Look for small to medium squash with smooth skin, as larger squash tend to have more seeds and hold extra moisture.

Cheddar Cheese: Sharp cheddar is our favorite choice because it adds the most flavor without overpowering the squash.

Ritz Crackers: The buttery cracker topping adds the signature crunch that makes this squash casserole so popular. If you don’t have Ritz crackers, buttery round crackers, panko breadcrumbs tossed with a little melted butter, or crushed saltine crackers can all be used instead.

Want to use zucchini?

You can substitute zucchini for some or all of the yellow squash. Since zucchini naturally contains more moisture, be sure to cook it until tender and allow any excess liquid to evaporate before assembling the casserole.

Tips for The Best Texture

A few simple techniques can help you get the best flavor and texture from this squash casserole every time.

• Cook the squash until just tender. Overcooked squash can release extra moisture and become mushy after baking.
• Don’t skip steaming the squash and onions together. This step softens the vegetables and helps develop their flavor before they go into the casserole.
• If you notice extra liquid in the skillet after cooking the squash, let it cook off for a minute or two before mixing the filling.
• Use freshly shredded cheese when possible. It melts more smoothly and creates a creamier texture than pre-shredded cheese.
• Let the casserole rest for 5 to 10 minutes after baking. This gives the filling time to set up slightly and makes serving easier.

How To Make Yellow Squash Casserole

This easy yellow squash casserole comes together with simple ingredients and just a few steps, making it perfect for weeknight dinners, holidays, and potlucks.

1. Cook the vegetables. Sauté the onion and garlic until fragrant, then add the squash and steam until tender.
2. Mix the filling. Combine the crackers and cheese, reserving some for the topping. Stir the eggs, milk, melted butter, cooked vegetables, and seasonings into the remaining cracker mixture.
3. Assemble the casserole. Spread the squash mixture into a baking dish and sprinkle the reserved cracker mixture evenly over the top.
4. Bake until golden. Dot the top with butter and bake until the filling is set and the cracker topping is lightly browned.
5. Cool slightly and serve. Let the casserole rest before serving so it holds together better when scooped.

FAQ

Can I use a different cheese?

Yes. Sharp cheddar adds the most flavor, but medium cheddar, Colby Jack, Monterey Jack, or a blend of your favorite cheeses will also work well in this casserole.

Can I make yellow squash casserole without crackers?

Yes. The crackers add buttery flavor and help create the casserole’s signature texture, but you can leave them out if needed. For a similar topping, try panko breadcrumbs tossed with melted butter or crushed pork rinds for a low-carb option. The casserole will still be delicious, although the texture will be a little different.

Why is my squash casserole watery?

Yellow squash naturally releases moisture as it cooks. If you notice extra liquid in the skillet after steaming the squash, let it cook off before mixing the filling. Allowing the casserole to rest for 5 to 10 minutes after baking also helps it set up before serving.

Storing Leftovers and Reheating

Store leftover squash casserole in an airtight container in the refrigerator for up to 4 days.

To reheat a single serving, warm it in the microwave until heated through. For larger portions, cover the casserole dish with foil and reheat in a 350°F oven for about 15 to 20 minutes, or until hot.

Make-Ahead

Yes. Assemble the casserole, without the final cracker layer, up to 24 hours in advance. Cover it tightly and store it in the refrigerator. Then add the cracker topping and butter, and bake when you’re ready to serve.

Freezing

You can freeze the baked casserole for up to 2 months. Let it cool completely, wrap tightly, and freeze. Thaw overnight in the refrigerator before reheating. Keep in mind that the squash will be a little softer after freezing and thawing, and the cracker topping won’t be quite as crisp.

What to Serve with Yellow Squash Casserole

Yellow squash casserole is a versatile side dish that pairs well with everything from simple weeknight dinners to holiday favorites. Serve it alongside your favorite protein for a comforting meal that’s easy to put together.

• Classic Meatloaf
• Breaded Pork Chops
• Honey Glazed Crock Pot Ham
• Roasted Chicken
• Cherry Cola Pulled Pork
• Grilled Chicken Thighs