Southern Squash Casserole – So Delicious
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Slap Your Mama It’s So Delicious Southern Squash Casserole isn’t just a dish; it’s a hug on a plate, a taste of home that instantly transports you to sun-drenched porches and gatherings brimming with laughter. We’ve all had those meals that just sing, the ones that make you close your eyes in pure bliss, and this squash casserole is undeniably one of them. People flock to this recipe for its comforting embrace, the way it transforms simple summer squash into something truly extraordinary. It’s the perfect blend of tender, creamy, and slightly sweet, with a topping that provides that irresistible crispy crunch we all crave. Forget bland or boring; this Slap Your Mama It’s So Delicious Southern Squash Casserole is packed with flavor and soul, making it a guaranteed showstopper at any potluck or family dinner.
Why You’ll Love This Casserole:
It’s the ultimate comfort food.
It’s surprisingly easy to make.
It’s a crowd-pleaser every single time.

Slap Your Mama It’s So Delicious Southern Squash Casserole
There are some dishes that just scream comfort food, and this Southern Squash Casserole is most definitely one of them. It’s the kind of side dish that disappears from the table faster than you can say “bless your heart.” The name says it all – it’s so incredibly delicious, you might just want to slap your mama for not making it sooner! This recipe is a classic for a reason. It’s simple to put together, uses humble ingredients, and delivers a flavor profile that’s both rich and comforting. Whether you’re serving it at a holiday feast, a potluck, or just a weeknight dinner, it’s guaranteed to be a hit. The tender squash, creamy sauce, and crunchy cracker topping create a symphony of textures and tastes that are just irresistible.
Ingredients:
- 3 pound(s) yellow squash, sliced or diced
- 1/2 cup(s) diced Vidalia onion, optional
- 1 can(s) cream of mushroom or chicken soup, 10.5 oz.
- 1 cup(s) mayonaise
- 1 – egg
- 8 ounce(s) shredded cheddar cheese (sharp is my favorite)
- 1 teaspoon(s) salt
- 1/2 teaspoon(s) fresh ground black pepper
TOPPING
- 2 – sleeves of Ritz crackers, crushed
- 1 stick(s) melted butter
Cooking Instructions
This squash casserole is all about layering those wonderful Southern flavors. The key is to get the squash tender but not mushy, and to achieve that perfect creamy, cheesy middle. And of course, that golden, buttery cracker topping is the crowning glory! Let’s get started.
Step 1: Prepare the Squash and Onions
First things first, we need to get our squash ready. Wash your 3 pounds of yellow squash thoroughly. You can either slice it into about 1/4-inch thick rounds or dice it into bite-sized pieces. I personally prefer slicing because I like to see those distinct squash pieces in the finished casserole, but dicing works beautifully too if you prefer a more integrated texture. If you’re using the Vidalia onion, dice it up now as well – about half a cup is perfect. The sweetness of the Vidalia onion really complements the squash without being overpowering, but if onions aren’t your thing, no worries, you can skip this step.
Step 2: Blanch the Squash
This step is crucial for getting the squash perfectly tender without it turning into a watery mess in the casserole. You have a couple of options here. You can boil the sliced or diced squash in salted water for about 5 minutes until it’s slightly tender, then drain it very, very well. Alternatively, and my preferred method, is to steam it. Place the squash in a steamer basket over boiling water and steam for about 5-7 minutes, just until it’s tender-crisp. Whichever method you choose, the most important part is to drain it exceptionally well. Squeeze out as much excess moisture as you possibly can. You can even lay it out on paper towels for a few minutes to absorb any lingering water. This prevents your casserole from becoming watery and ensures a lovely, cohesive dish. If you’ve added the onions, you can blanch them along with the squash for the last couple of minutes of cooking time to soften them slightly.
Step 3: Create the Creamy Filling
Now it’s time to bring all those delicious creamy elements together. In a large mixing bowl, combine your can of cream of mushroom or chicken soup. I often use cream of mushroom because it adds a wonderfully savory depth, but cream of chicken is a fantastic choice too. Next, add in your mayonnaise. This adds a lovely richness and helps bind everything together. Then, crack in your egg and whisk it in thoroughly. Now, let’s get that cheese in there! Stir in your 8 ounces of shredded cheddar cheese. I’m a big fan of sharp cheddar because it gives a fantastic tang, but feel free to use mild or medium cheddar if that’s what you have on hand. Lastly, season your mixture with 1 teaspoon of salt and 1/2 teaspoon of fresh ground black pepper. Give everything a good stir until it’s well combined and smooth.
Step 4: Combine and Bake
Gently fold your well-drained squash (and blanched onions, if using) into the creamy cheese mixture. You want to coat all the squash evenly without mashing it too much. Pour this glorious mixture into a greased 9×13 inch baking dish. Smooth the top evenly. Now for that irresistible topping! In a separate small bowl, crush your 2 sleeves of Ritz crackers. I like to do this by putting them in a zip-top bag and giving them a good roll with a rolling pin, but you can also pulse them briefly in a food processor. Make sure they’re not turned into dust, you want some nice flaky bits. Pour your stick of melted butter over the crushed crackers and stir to combine until all the crumbs are moistened. Sprinkle this buttery cracker mixture evenly over the top of the squash casserole.
Step 5: Bake to Golden Perfection
Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Place your assembled casserole in the preheated oven and bake for about 30 to 40 minutes. You’re looking for a bubbly casserole with a beautifully golden brown and crispy cracker topping. The edges should be gently simmering, and the aroma filling your kitchen will be absolutely divine. Let the casserole rest for about 5-10 minutes after you take it out of the oven before serving. This allows it to set up just a little, making it easier to serve and ensuring all those delicious flavors meld together. Serve hot and watch it disappear! This Southern Squash Casserole is truly a taste of home.

Conclusion:
There you have it – the secrets to my Slap Your Mama It’s So Delicious Southern Squash Casserole! This recipe is an absolute winner because it’s incredibly simple to make yet delivers a flavor explosion that truly lives up to its name. The creamy, tender squash, combined with the savory crunchy topping, creates a harmonious balance of textures and tastes that’s pure comfort food. It’s the perfect side dish to elevate any meal, from a casual weeknight dinner to a festive holiday gathering. I encourage you to give this Southern Squash Casserole a try; I’m confident it will become a beloved staple in your recipe collection!
This casserole shines alongside barbecue, fried chicken, or a hearty pot roast. For a lighter option, consider serving it with grilled fish or a vibrant salad. Don’t be afraid to get creative with variations! You could add a pinch of cayenne pepper for a little heat, stir in some sautéed onions or garlic for extra depth of flavor, or even swap out the cheese for a sharp cheddar or a melty Monterey Jack.
Frequently Asked Questions:
Can I make this Southern Squash Casserole ahead of time?
Absolutely! You can assemble the casserole up to 24 hours in advance. Cover it tightly with plastic wrap and refrigerate. When ready to bake, remove it from the refrigerator about 30 minutes before baking to allow it to come closer to room temperature, and then bake as directed, possibly adding a few extra minutes to the cooking time.
What if I don’t have fresh squash? Can I use frozen?
Yes, you can use frozen squash! You’ll need about 2 pounds of frozen yellow squash. Thaw it completely and drain off as much excess moisture as possible before proceeding with the recipe. This step is crucial to prevent a watery casserole.
How can I make the topping extra crispy?
For an exceptionally crispy topping, you can lightly toast your breadcrumbs in a dry skillet before adding them to the butter mixture. Alternatively, you can broil the casserole for the last minute or two of baking, keeping a very close eye on it to prevent burning.

Slap Your Mama It’s So Delicious Southern Squash Casserole
A classic Southern squash casserole that’s so good, you’ll want to slap your mama (but please don’t!). Creamy, cheesy, and topped with a buttery cracker crumble.
Ingredients
-
3 pound(s) yellow squash, sliced or diced
-
1/2 cup(s) diced Vidalia onion, optional
-
1 can(s) cream of mushroom soup, 10.5 oz.
-
1 cup(s) mayonnaise
-
1 egg
-
8 ounce(s) shredded cheddar cheese
-
1 teaspoon(s) salt
-
1/2 teaspoon(s) fresh ground black pepper
-
2 sleeves Ritz crackers, crushed
-
1 stick(s) melted butter
Instructions
-
Step 1
Preheat oven to 375°F (190°C). -
Step 2
If using fresh squash, wash and slice or dice it. If using frozen, thaw and drain well. -
Step 3
In a large bowl, combine the prepared squash, diced onion (if using), cream of mushroom soup, mayonnaise, egg, shredded cheddar cheese, salt, and pepper. Mix well to evenly distribute all ingredients. -
Step 4
Pour the squash mixture into a greased 9×13 inch baking dish. -
Step 5
In a separate small bowl, combine the crushed Ritz crackers and melted butter. Stir until the crackers are evenly coated. -
Step 6
Sprinkle the buttered cracker topping evenly over the squash mixture in the baking dish. -
Step 7
Bake for 35-40 minutes, or until the casserole is bubbly and the topping is golden brown. -
Step 8
Let stand for 5-10 minutes before serving.
Important Information
Nutrition Facts (Per Serving)
It is important to consider this information as approximate and not to use it as definitive health advice.
Allergy Information
Please check ingredients for potential allergens and consult a health professional if in doubt.