Ultimate Cheesy Southern Yellow Squash Casserole Ritz
There are some dishes that just wrap you in a warm hug, and this Ultimate Cheesy Southern Yellow Squash Casserole Ritz is one of them for me. After years of traveling and tasting incredible foods around the world, coming back to a classic like this feels like coming home. It’s a true taste of Southern comfort, combining tender, perfectly cooked yellow squash with a rich, creamy, cheesy filling. The real magic, for me, is that irresistibly crunchy Ritz cracker topping. It’s a simple yet satisfying combination that has been a family favorite for ages, a tradition I’m so happy to keep alive in my kitchen. This dish reminds me that sometimes, the most delicious meals are the ones that feel familiar and deeply comforting.

Why You’ll Love This Ultimate Cheesy Southern Yellow Squash Casserole Ritz
This casserole is a winner for so many reasons! It’s a dish that truly delivers on flavor and ease.
- It’s super quick and easy to put together.
- You get a wonderfully rich, creamy, and cheesy filling in every bite.
- That deliciously crunchy Ritz cracker topping is pure perfection.
- It’s the ultimate classic Southern comfort food that warms the soul.
- It’s a guaranteed crowd-pleaser, perfect for any potluck or holiday meal.
Ingredients for the Ultimate Cheesy Southern Yellow Squash Casserole Ritz
Gathering your ingredients is the first step to a fantastic casserole. For the star of the show, I always look for firm, brightly colored yellow squash. About two pounds should do it, and I like to slice them thinly, around 1/8-inch thick, so they cook evenly. Next up, we have one cup of finely chopped yellow onion, which adds a lovely depth of flavor. You’ll need a quarter cup of unsalted butter to sauté those veggies until they’re just tender-crisp.

For that signature creamy, cheesy goodness, we’re using two cans of condensed cream of mushroom soup and cream of chicken soup. Make sure they’re undiluted for the best texture! A cup of full-fat sour cream brings a wonderful tang, and a cup of shredded sharp cheddar cheese melts into pure bliss. We’ll also add half a cup of whole milk and one large, lightly beaten egg to bind it all together.
And for that irresistible crunch? Grab a cup of Ritz crackers, crushed nice and fine – that’s about 25 to 30 crackers. You’ll then toss these with two tablespoons of melted unsalted butter for the perfect golden topping. It’s a simple list, but these ingredients come together for something truly special!
Equipment Needed for Your Ultimate Cheesy Southern Yellow Squash Casserole Ritz
To whip up this delightful casserole, you don’t need a whole lot of fancy gadgets. Just a few everyday kitchen essentials will get the job done beautifully. You’ll want a large skillet for sautéing your squash and onions. A big mixing bowl is key for combining all those creamy ingredients. Don’t forget a small bowl for mixing your cracker topping. Of course, you’ll need measuring cups and spoons for accuracy. A whisk or fork will help you blend the filling smoothly. Finally, a 9×13 inch baking dish is perfect for baking this crowd-pleaser, and a spatula or large spoon will be handy for mixing and serving.
How to Prepare the Ultimate Cheesy Southern Yellow Squash Casserole Ritz
Let’s get cooking! Making this Ultimate Cheesy Southern Yellow Squash Casserole Ritz is a straightforward process that yields delicious results. First things first, preheat your oven to 375°F (190°C). This gives it time to get nice and hot.
Step 1: Preheat and Prepare Squash
Grab your large skillet and melt the 1/4 cup of butter over medium heat. Add your thinly sliced yellow squash and chopped onion. Sauté them for about 5-7 minutes. My biggest tip here, from years of making this, is to cook them until they’re just tender-crisp. You don’t want mushy squash; it will continue to soften in the oven. So, aim for a slight bite!
Step 2: Mix the Creamy Filling
While the veggies are doing their thing, let’s make the creamy base. In your large mixing bowl, combine the undiluted condensed cream of mushroom soup and cream of chicken soup. Stir in the sour cream, shredded cheddar cheese, milk, and the lightly beaten egg. Mix everything together until it’s smooth and well combined. No one likes pockets of unmixed soup!
Step 3: Combine and Transfer
Now, add that tender-crisp sautéed squash and onion mixture to the creamy soup mixture. Stir it all together gently but thoroughly. Make sure every piece of squash is coated in that luscious sauce. Once it’s all mixed, pour this deliciousness into your greased 9×13 inch baking dish. Spread it out evenly.

Step 4: Prepare the Ritz Topping
For that essential crunch, take your crushed Ritz crackers and put them into a small bowl. Pour the 2 tablespoons of melted butter over the crumbs. Stir them together until all the cracker crumbs are nicely coated in butter. This little step makes all the difference for a golden, crisp topping.
Step 5: Assemble and Bake
Sprinkle that buttery Ritz cracker mixture evenly over the top of the casserole in the baking dish. Try to get an even layer so every bite has some crunch. Pop the dish into your preheated oven. Bake for about 30 to 40 minutes. You’ll know it’s ready when the casserole is bubbly around the edges and the cracker topping is a beautiful golden brown. Let it rest for a few minutes before digging in!

Ingredient Notes and Substitutions
Let’s talk a little more about some of the ingredients that make this casserole so special. Yellow squash is my go-to because it has a delicate flavor and a tender texture that cooks up beautifully without getting watery. It really lets the other flavors shine.
When it comes to our cream soups, using them undiluted is key. It gives the casserole that rich, thick, creamy consistency we’re after. If, for some reason, you can’t find cream of mushroom or chicken, you could try cream of celery, but the flavor will be a bit different. For the cheese, sharp cheddar is fantastic, but feel free to mix in some Gruyere or even a little Monterey Jack for a different cheesy profile.
Now, about that crown jewel – the topping! Jen and I have experimented a lot here. While Ritz crackers are classic for a reason, they give a wonderfully buttery, salty crunch. If you can’t find them or want to try something else, buttery crackers like Club crackers work well. Even Panko breadcrumbs tossed with a bit of melted butter can give you a great crispy topping, though it won’t have quite the same nostalgic flavor. It’s all about what makes your taste buds happy!
Tips for the Perfect Ultimate Cheesy Southern Yellow Squash Casserole Ritz
Want to make sure your casserole turns out absolutely perfect every time? I’ve picked up a few tricks over the years that really help!
- Remember not to overcook the squash when you sauté it. A tender-crisp texture is what you’re aiming for, as it will continue to soften in the oven.
- Always use undiluted condensed soups. This is crucial for achieving that rich, creamy casserole base we all love.
- Feeling extra cheesy? Go ahead and add a little more cheddar cheese to the filling. It never hurts!
- Once it’s out of the oven, let the casserole rest for about 5-10 minutes before serving. This helps it set up beautifully.
Serving and Storage Instructions
This Ultimate Cheesy Southern Yellow Squash Casserole Ritz is a fantastic side dish that pairs wonderfully with so many main courses. Think of it alongside grilled chicken, baked ham, or even a hearty meatloaf. It really rounds out any meal with its creamy, comforting flavor.
Leftovers are a treasure! Store any remaining casserole in an airtight container in the refrigerator for up to 3-4 days. It holds up beautifully.
When you’re ready to reheat, you have a couple of easy options. For the best texture, I like to reheat it in a 350°F (175°C) oven for about 15-20 minutes, or until heated through. If you’re in a real hurry, you can certainly reheat individual portions in the microwave, just be mindful that the topping might not be quite as crisp.
Frequently Asked Questions about Ultimate Cheesy Southern Yellow Squash Casserole Ritz
We get asked a lot of questions about this beloved southern recipe! Here are some of the most common ones. Alex and I love sharing what we’ve learned over the years.
Can I make this casserole ahead of time?
Yes, you absolutely can! Assemble the casserole completely, but don’t add the Ritz cracker topping just yet. Cover it tightly with plastic wrap and refrigerate for up to two days. When you’re ready to bake, let it sit at room temperature for about 20 minutes, then add the cracker topping and bake as directed, possibly adding a few extra minutes to the baking time.
What can I use if I don’t have Ritz crackers?
Jen has a knack for finding great substitutes! If Ritz crackers aren’t available, buttery crackers like Club crackers work wonderfully. You could also use crushed saltine crackers for a slightly different flavor, or even Panko breadcrumbs mixed with a little melted butter for a super crispy topping. They all give a delicious crunch!
Can I freeze this casserole?
Freezing this cheesy casserole is definitely possible. Assemble it (without the cracker topping), cover it very well, and freeze for up to 2-3 months. Thaw it overnight in the refrigerator before baking. Add the cracker topping just before baking and adjust baking time as needed.
How do I prevent a watery squash casserole?
The key is not to overcook the squash when you sauté it. Aim for tender-crisp, not mushy. Also, make sure your condensed soups are undiluted. Draining the squash after sautéing isn’t usually necessary if you haven’t overcooked it, but if you notice a lot of excess liquid, a quick drain can help.
Is this casserole vegetarian?
Yes, it is! The ingredients are all vegetarian. It’s a wonderful vegetable side dish that even picky eaters usually love. It’s a staple on our vegetarian-friendly holiday tables.
Nutritional Information
Please keep in mind that the nutritional values provided are estimates. The actual calories, fat, sodium, and other nutrients can vary significantly. This depends on the specific brands of ingredients you use, portion sizes, and any adjustments you make to the recipe. We aim for accuracy, but consider this a helpful guide rather than a strict guarantee.
Share Your Ultimate Cheesy Southern Yellow Squash Casserole Ritz!
Have you tried making this Ultimate Cheesy Southern Yellow Squash Casserole Ritz? We’d truly love to hear all about your experience. Please share your thoughts, any photos you might have snapped, or even any creative variations you tried in the comments below. Your feedback is so helpful to us and to fellow home cooks!
PrintUltimate Cheesy Southern Yellow Squash Casserole Ritz 10
A comforting and flavorful casserole featuring tender yellow squash, creamy cheese, and a crunchy Ritz cracker topping. This Southern classic is perfect for potlucks and family dinners.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 8 servings
- Category: Side Dish
- Method: Baking
- Cuisine: Southern
- Diet: Vegetarian
Ingredients
- 1.5 pounds yellow squash, sliced
- 1/2 cup chopped onion
- 1/4 cup butter
- 1/4 cup all-purpose flour
- 1.5 cups milk
- 1 cup shredded cheddar cheese
- 1/2 cup shredded Monterey Jack cheese
- 2 eggs, beaten
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 cup crushed Ritz crackers
- 2 tablespoons melted butter
Instructions
- Preheat oven to 375°F (190°C).
- In a large skillet, sauté the sliced yellow squash and chopped onion in 1/4 cup butter until tender.
- In a separate saucepan, melt 1/4 cup butter over medium heat. Whisk in the flour and cook for 1 minute.
- Gradually whisk in the milk until smooth. Cook, stirring constantly, until thickened.
- Remove from heat and stir in the cheddar cheese and Monterey Jack cheese until melted.
- Stir in the beaten eggs, salt, and pepper.
- Add the cooked squash and onion mixture to the cheese sauce and mix well.
- Pour the mixture into a greased 9×13 inch baking dish.
- In a small bowl, combine the crushed Ritz crackers and 2 tablespoons of melted butter. Sprinkle evenly over the squash mixture.
- Bake for 25-30 minutes, or until golden brown and bubbly.
Notes
- For an extra layer of flavor, add a pinch of nutmeg to the cheese sauce.
- You can substitute other crunchy crackers for Ritz crackers if desired.
- This casserole can be made ahead of time and reheated before serving.
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sugar: 8g
- Sodium: 600mg
- Fat: 25g
- Saturated Fat: 15g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 2g
- Protein: 10g
- Cholesterol: 70mg
























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