Name: Squash Casserole with Cheddar and Cracker Topping Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 55 min
Cuisine: American
Ingredients: 3 Tablespoons salted butter; 2 pounds yellow squash, sliced about ¼-inch thick; 1 cup chopped sweet onion (Vidalia onion recommended); 1 teaspoon kosher salt; ¼ teaspoon black pepper; ¼ teaspoon garlic powder; ¼ teaspoon paprika; 2 large eggs; ½ cup sour cream; ¼ cup mayonnaise; 1 ½ cups shredded sharp cheddar cheese; 1 sleeve Ritz crackers, crushed; 3 Tablespoons salted butter, melted; Dried parsley, for garnish (optional)

Jump to Recipe· 4.1 from 12 reviews

I absolutely adore making this Squash Casserole with Cheddar and Cracker Topping Recipe whenever I want a comforting, flavorful side dish that pleases everyone at the table. The tender yellow squash is perfectly seasoned and mixed with creamy sour cream and sharp cheddar cheese, while the buttery cracker topping adds an irresistible golden crunch that keeps me coming back for more. It’s one of those recipes I reach for not only because it tastes fantastic but also because it feels like a warm hug in a dish every time I serve it.

Why You’ll Love This Squash Casserole with Cheddar and Cracker Topping Recipe

I love this squash casserole because it strikes a wonderful balance between creamy, cheesy goodness and a crispy, buttery topping that’s just heavenly. The combination of flavors—from the slight sweetness of the yellow squash to the savory sharp cheddar, with a hint of smoky paprika—creates a depth that makes this dish truly special in my cookbook. The seasoning is just right, making every bite satisfying without overwhelming the natural squash flavor.

One of my favorite things about this Squash Casserole with Cheddar and Cracker Topping Recipe is how easy it is to prepare. I can whip it up in under an hour with simple ingredients from my pantry, and it’s so forgiving if you want to tweak it a bit. It’s perfect for family dinners, holiday gatherings, or potlucks because it complements so many different main dishes and always seems to be a crowd-pleaser. What really sets it apart for me is that crispy Ritz cracker topping, which adds such a delightful texture contrast that I don’t want to skip.

Ingredients You’ll Need

A black pan seen from above holds a mix of sliced yellow squash and chopped white onions. The yellow squash slices are round and piled mainly on the left side of the pan, showing their soft, pale yellow inside. The chopped onions, white and chunky, cover the right side in a rough pile. On top of the vegetables, scattered in small piles, are white salt crystals, black pepper specks, and a light brown powder seasoning. The pan has a long gray and silver handle extending downward. The pan rests on a white marbled surface with faint wood textures visible. photo taken with an iphone --ar 4:5 --v 7

The ingredients for this casserole are straightforward but essential for getting that perfect combination of taste and texture. Each one plays a role—from the rich butter that creates flavor and moisture, to the sharp cheddar that brings depth, to the crunchy cracker topping that finishes it all off beautifully.

Salted butter: I use it for cooking the squash and also to create the rich cracker topping, adding richness throughout.
Yellow squash: About 2 pounds sliced thin, this is the star ingredient delivering mild sweetness and tender texture.
Sweet onion: I prefer Vidalia for their gentle, sweet flavor that complements the squash perfectly.
Kosher salt: Essential for seasoning and bringing out all the natural flavors in the dish.
Black pepper: Adds a subtle heat and depth without overpowering the casserole.
Garlic powder and paprika: These spices provide a subtle smoky and savory note that elevates the entire casserole.
Large eggs: They help bind everything together and add a lovely richness.
Sour cream and mayonnaise: These give the casserole a creamy, tangy base with perfect moisture.
Sharp cheddar cheese: The cheese adds a bold, melty factor that I absolutely love—never skimp on this!
Ritz crackers: Crushed for a buttery, crispy topping that seals the deal on this dish’s texture and flavor.
Dried parsley (optional): Adds a fresh color contrast and mild herbal note for garnish.

Directions

Step 1: Preheat your oven to 350°F and grease an 11×7-inch baking dish with cooking spray so your casserole won’t stick and will come out cleanly.

Step 2: In a large skillet, melt 3 tablespoons of salted butter over medium heat until it’s shimmering beautifully, then add the sliced yellow squash, chopped sweet onion, kosher salt, black pepper, garlic powder, and paprika. Stir everything to coat the squash evenly with butter and spices.

Step 3: Cook the squash mixture, stirring occasionally, until the squash softens nicely, about 10 minutes. You want it tender but not mushy.

Step 4: Transfer the cooked squash and onions to a colander set over a large bowl and let them drain for 10 minutes to remove excess liquid—this step is key to avoiding a soggy casserole.

Step 5: In a large mixing bowl, whisk together the eggs, sour cream, mayonnaise, and shredded sharp cheddar cheese until smooth and creamy.

Step 6: Add the drained squash mixture to the egg and cheese mixture. Stir everything together gently but thoroughly. Discard any remaining liquid left in the colander for best texture.

Step 7: Pour this combined filling into your prepared baking dish and spread it out evenly.

Step 8: For the topping, roughly crush one sleeve of Ritz crackers (leaving some larger chunks for texture) in a medium bowl and stir in 3 tablespoons of melted salted butter until the crumbs are nicely coated.

Step 9: Sprinkle the buttery cracker topping evenly across the casserole. Bake in the oven for 15-20 minutes, or until the topping is golden brown and the casserole is bubbling lightly around the edges.

Step 10: Remove from oven, garnish with a sprinkle of dried parsley if you want a pop of green, and serve warm to enjoy that perfect mix of creamy and crunchy.

Servings and Timing

This recipe serves 8 generous portions, making it a fantastic choice for family dinners or gatherings. The prep time is about 15 minutes, with a cook time of 30 minutes, plus 10 minutes to drain the cooked squash. Altogether, you’re looking at roughly 55 minutes from start to finish, which I find is just right for a dish this satisfying and impressive.

How to Serve This Squash Casserole with Cheddar and Cracker Topping Recipe

The image shows a clear glass rectangular dish filled with creamy yellow squash slices mixed with melted shredded cheese. The sliced squash layers are soft with some greenish seeds visible inside them, evenly coated by a rich, smooth cheese sauce that has a light glossy texture. The dish is placed on a white marbled surface with subtle brown streaks. photo taken with an iphone --ar 4:5 --v 7

When serving this casserole, I love pairing it with roasted or grilled meats like chicken, pork chops, or a juicy pot roast because the creamy, cheesy squash complements those savory mains beautifully. It’s also delicious alongside a fresh green salad or steamed green beans to add some brightness and crunch to the plate.

I usually serve the casserole warm right out of the oven so the topping stays crisp and the cheese is perfectly melty. For a bit of flair, I sprinkle some fresh chopped parsley on top for color and a hint of fresh herbal flavor. I like to portion it out in generous square servings, as it’s quite rich and satisfying. For festive occasions, this casserole also pairs wonderfully with sparkling water with lemon or a crisp white wine like Sauvignon Blanc, which cuts through the richness and refreshes the palate.

Whether it’s a casual weeknight dinner or a special holiday feast, this dish elevates any table. I’ve even brought it along to potlucks and parties, where it’s often requested again. Serving it in a bright, ceramic baking dish adds a touch of homey charm that guests appreciate.

Variations

I love experimenting with this recipe by swapping out ingredients to fit dietary needs or flavor preferences. If you want a gluten-free version, simply use gluten-free crackers for the topping, which still gives you that wonderful crunch without the gluten. You can even substitute the sour cream and mayo with vegan versions to make this casserole dairy-free and vegan-friendly; just expect a slightly different texture but still tasty.

For a flavor twist, I sometimes add a pinch of cayenne pepper or smoked paprika instead of regular paprika for a little extra kick. Adding some finely chopped jalapeño or red bell pepper also brings a fresh zip to the mix if you like a bit more heat and color.

If you’re short on time, you could try baking this casserole in a cast-iron skillet for a beautiful crust on the bottom and sides. Just be sure to adjust the cooking time slightly and keep an eye on it so it doesn’t dry out. These variations keep this classic dish exciting and always a crowd-pleaser in my kitchen.

Storage and Reheating

Storing Leftovers

I recommend placing any leftover squash casserole in an airtight container and storing it in the refrigerator. It stays delicious and safe to eat for up to 3 to 4 days. Using a container with a tight seal helps prevent it from drying out or absorbing other fridge odors.

Freezing

This casserole freezes well if you want to save portions for later. To freeze, let the casserole cool completely, then wrap it tightly with plastic wrap and aluminum foil to prevent freezer burn, or place it in a freezer-safe container. It keeps nicely for up to 2 months. Just be sure to thaw it overnight in the refrigerator before reheating for best texture.

Reheating

When reheating, I find the oven is best to restore that crispy cracker topping. Preheat your oven to 350°F and bake the reheated casserole uncovered for about 15-20 minutes until warmed through and the topping is crisp again. Avoid microwaving if possible, as it can make the cracker topping soggy and the casserole unevenly heated. For quicker reheats, use a toaster oven or air fryer set at medium heat for a few minutes.

FAQs

Can I use other types of squash for this recipe?

Absolutely! While yellow squash is traditional and has a mild sweetness, zucchini or a mix of summer squashes work beautifully too. Just be sure to slice them evenly and drain well to avoid excess moisture.

Is it necessary to drain the cooked squash before mixing?

Yes, draining the squash mixture is key to a non-soggy casserole. Removing the excess liquid helps the dish set properly and keeps the texture just right, especially with the crunchy cracker topping.

Can I prepare this casserole in advance?

Definitely! You can prepare the entire casserole up to the baking step the day before, cover it tightly, and refrigerate overnight. When ready to serve, just add the topping and bake as directed.

What can I substitute for the Ritz cracker topping if I have dietary restrictions?

You can substitute crushed gluten-free crackers, panko breadcrumbs, or even crushed nuts like pecans or almonds for a crunchy topping. Adjust the butter amount to ensure the topping remains moist and flavorful.

How do I make this casserole creamier?

If you want a richer texture, you can increase the amount of sour cream or add a bit of cream cheese to the mixture. Just be careful not to overdo it, so the casserole still holds together well and bakes nicely.

Conclusion

I truly hope you enjoy making and sharing this Squash Casserole with Cheddar and Cracker Topping Recipe as much as I do. It’s the kind of dish that brings comfort, joy, and a little bit of nostalgia to any meal, with a delicious homemade touch. Give it a try—you might just find your new favorite way to celebrate summer squash or add a tasty side to your dinner rotation!