Introduction
Southern Squash Casserole is a classic dish that brings comfort, warmth, and rich flavors to the table. A perfect combination of tender squash, creamy cheese, and a crispy, golden topping, this casserole is a staple in Southern homes and gatherings. Whether you’re serving it as a side dish at a holiday meal, a weeknight dinner, or even as a part of a potluck, Southern Squash Casserole is always a crowd-pleaser. Made with simple ingredients, it’s easy to prepare yet full of flavor, making it an ideal dish to add to your cooking repertoire.
Perfect for:
- Family gatherings
- Holiday meals like Thanksgiving or Christmas
- Potluck parties
- Weeknight dinners
- Squash lovers
Why You’ll Love This Southern Squash Casserole
Here’s why Southern Squash Casserole will become your go-to side dish:
- Rich and Creamy Flavor: The blend of squash, cheese, and creamy base creates a comforting dish with an irresistible flavor that’s loved by all.
- Perfectly Tender Squash: The squash is tender but not mushy, and it absorbs the savory flavors of the casserole, making every bite satisfying.
- Easy to Make: This casserole requires minimal effort and ingredients, making it a perfect option for any level of home cook.
- Great for Sharing: It’s a great dish to share at gatherings or parties and always a hit with guests.
- Customizable: You can easily modify the recipe to suit your tastes by adding extra vegetables or herbs.
Preparation and Cooking Time
- Total Time: 1 hour 15 minutes
- Preparation Time: 15 minutes
- Baking Time: 1 hour
- Servings: 8-10 servings
- Calories per Serving: Approximately 250-300 calories
- Key Nutrients: Protein: 8g, Carbs: 15g, Fat: 20g
Ingredients
Here’s what you’ll need to make this delicious and comforting Southern Squash Casserole:
- 4-5 medium yellow squash (about 4 cups sliced)
- 1 medium onion, finely chopped
- 2 tablespoons unsalted butter
- 1/2 cup mayonnaise
- 1/2 cup sour cream
- 1 cup shredded cheddar cheese (use a mix of sharp and mild for depth of flavor)
- 1/2 cup grated Parmesan cheese
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon dried thyme (optional)
- Salt and black pepper to taste
- 1/2 cup crushed crackers (e.g., Ritz crackers) or breadcrumbs for topping
- 2 tablespoons butter, melted (for topping)
Ingredient Highlights
- Yellow Squash: The star ingredient of the dish, yellow squash provides a mild, sweet flavor and soft texture when cooked, perfect for a casserole.
- Cheddar Cheese: The melted cheddar cheese gives the casserole its creamy and flavorful base, with a rich, savory kick.
- Sour Cream and Mayonnaise: These two creamy ingredients help to bind the casserole together, making it rich and velvety.
- Onion and Garlic Powder: These spices add depth and savory flavor to the casserole, balancing out the sweetness of the squash.
- Crackers or Breadcrumbs: The crushed crackers or breadcrumbs create a crispy, golden topping that contrasts beautifully with the soft interior.
Step-by-Step Instructions
Follow these simple steps to create the perfect Southern Squash Casserole:
Prepare the Squash:
- Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch casserole dish with butter or cooking spray.
- Slice the Squash: Wash and slice the squash into thin, even rounds. You can also slice it into half-moons for a slightly different texture.
- Cook the Squash: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the sliced squash and chopped onion. Sauté for 5-7 minutes, or until the squash becomes tender and the onion softens. Stir occasionally to ensure even cooking. You want the squash to release some moisture, but avoid overcooking it to the point where it becomes mushy.
Mix the Casserole Base:
- Prepare the Creamy Mixture: In a large mixing bowl, combine the mayonnaise, sour cream, shredded cheddar cheese, grated Parmesan cheese, garlic powder, onion powder, dried thyme (if using), salt, and pepper. Stir well to combine.
- Combine with Squash: Once the squash mixture has cooled slightly, stir it into the creamy mixture. Mix until the squash is well-coated, and the casserole mixture is even.
Assemble the Casserole:
- Transfer to Casserole Dish: Spoon the squash and creamy mixture into the prepared casserole dish. Use a spatula to spread it out evenly and make sure it’s well-packed in the dish.
- Top with Crumbs: In a small bowl, combine the crushed crackers or breadcrumbs with the melted butter. Stir until the crumbs are evenly coated. Sprinkle this crumb mixture over the top of the casserole, ensuring it’s evenly distributed to create a nice, golden topping.
Bake the Casserole:
- Bake: Place the casserole in the preheated oven and bake for 45-50 minutes, or until the top is golden brown and crispy, and the casserole is bubbling around the edges. You can check the doneness by gently pressing on the casserole—if it’s firm and the top is golden, it’s ready.
- Cool and Serve: Once baked, let the casserole cool for a few minutes before serving. This allows the flavors to set and makes it easier to scoop out portions.

How to Serve Southern Squash Casserole
Southern Squash Casserole is a versatile dish and can be served in various ways:
- As a Side Dish: Serve it alongside your favorite main dishes like baked chicken, roast beef, or grilled fish. It’s the perfect complement to a hearty meal.
- With Gravy: For extra flavor, serve this casserole with a side of gravy or sauce, particularly for holiday meals.
- With Fresh Greens: Pair with a fresh salad or some sautéed greens like spinach or collard greens to balance out the richness of the casserole.
- At Potlucks or Parties: This casserole is perfect for gatherings, potlucks, or church suppers. It’s always a hit and often one of the first dishes to disappear!
- As Leftovers: Reheat the casserole the next day for a quick lunch or dinner. It’s just as delicious the second time around.
Additional Tips for Southern Squash Casserole
Here are some helpful tips to make your Southern Squash Casserole even better:
- Don’t Overcook the Squash: To prevent mushy casserole, make sure to cook the squash just until tender, not too long. This will ensure it holds its shape in the casserole.
- Use a Mix of Cheeses: You can experiment with different cheeses, such as mozzarella or gouda, for a unique twist. A mix of cheeses gives the casserole a more complex flavor.
- Add Extra Veggies: You can add other vegetables like bell peppers, tomatoes, or zucchini to the casserole to make it even more flavorful and hearty.
- Make Ahead: You can prepare the casserole ahead of time and refrigerate it before baking. Just cover it tightly with foil and bake as directed, but add a few extra minutes to the baking time since it will be cold.
- Vegan Adaptation: If you’re looking for a vegan version, use dairy-free cheese, vegan mayonnaise, and vegan sour cream. Be sure to check the crackers or breadcrumbs for dairy.
Recipe Variations of Southern Squash Casserole
If you’re looking for ways to spice up or change your Southern Squash Casserole, here are some variations you can try:
- Zucchini and Squash Casserole: Swap half of the squash with zucchini for a slightly different flavor and texture while keeping the same delicious casserole base.
- Spicy Squash Casserole: Add some diced jalapeños or a pinch of cayenne pepper to give the casserole a spicy kick.
- Garlic Herb Squash Casserole: Increase the amount of garlic or add fresh herbs like rosemary or basil to enhance the flavor.
- Bacon-Free Southern Squash Casserole: If you don’t eat bacon, you can skip the bacon bits or use Halal turkey bacon as a substitute.
- Cheesy Bacon Squash Casserole: For those who enjoy bacon, add some cooked bacon bits or crumbled turkey bacon for a smoky flavor.
- Squash and Mushroom Casserole: Add sautéed mushrooms for an earthy depth of flavor.
- Sausage and Squash Casserole: Try adding crumbled sausage (Halal sausage if needed) for a meaty, savory casserole.
- Cornbread Squash Casserole: For a Southern twist, incorporate cornbread crumbs into the casserole for added texture and flavor.
- Cajun Squash Casserole: Add a dash of Cajun seasoning or smoked paprika for a bold, smoky flavor.
- Southern Squash Casserole with Pecans: Sprinkle some chopped pecans on top for a bit of crunch and nutty flavor.
Freezing and Storage for Southern Squash Casserole
- Freezing: If you have leftover casserole or want to prepare it ahead of time, you can freeze it. Once baked and cooled, wrap the casserole tightly in plastic wrap or foil and store it in an airtight container for up to 3 months. To reheat, thaw it in the fridge overnight and bake at 350°F (175°C) for about 20-30 minutes.
- Storage: Store the casserole in an airtight container in the refrigerator for up to 4-5 days. Reheat individual portions in the microwave or bake in the oven at 350°F (175°C) until warmed through.
Special Equipment for Southern Squash Casserole
Here are some items that will make making Southern Squash Casserole even easier:
- 9×13-inch Casserole Dish: A medium to large-sized casserole dish is perfect for this recipe, giving it plenty of space to cook evenly.
- Skillet: A large skillet helps you sauté the squash and onions quickly and evenly.
- Mixing Bowls: Having a few mixing bowls on hand will make it easier to combine your creamy casserole mixture and mix the squash.
- Spatula: A silicone spatula helps you stir the ingredients without scratching your cookware.
- Grater: A box grater or food processor can be helpful when grating the cheeses for the casserole.
- Measuring Spoons and Cups: Accurate measurements help you get the right balance of ingredients for the casserole.
FAQ Section about Southern Squash Casserole
- Can I use yellow squash instead of zucchini?
Yes! Yellow squash is typically used in this recipe, but zucchini can work as a great substitute, or you can mix both for a more colorful dish. - Is this recipe vegetarian?
Yes, the recipe is vegetarian-friendly. If you want to make it vegan, substitute dairy-free ingredients as needed. - How do I prevent the squash from getting too watery?
Avoid overcooking the squash, and consider draining any excess liquid after sautéing the squash and onion. - Can I make this casserole ahead of time?
Yes, you can assemble the casserole and refrigerate it for up to 24 hours before baking. Just add a few extra minutes to the baking time if it’s cold from the fridge. - Can I add other vegetables?
Absolutely! Feel free to add veggies like bell peppers, mushrooms, or even spinach for extra flavor and nutrients.
Southern Squash Casserole
- Prep Time: 15minutes
- Total Time: 1hour 15minutes
Ingredients
-
4–5 medium yellow squash (about 4 cups sliced)
-
1 medium onion, finely chopped
-
2 tablespoons unsalted butter
-
1/2 cup mayonnaise
-
1/2 cup sour cream
-
1 cup shredded cheddar cheese (use a mix of sharp and mild for depth of flavor)
-
1/2 cup grated Parmesan cheese
-
1/2 teaspoon garlic powder
-
1/2 teaspoon onion powder
-
1/2 teaspoon dried thyme (optional)
-
Salt and black pepper to taste
-
1/2 cup crushed crackers (e.g., Ritz crackers) or breadcrumbs for topping
-
2 tablespoons butter, melted (for topping)
Ingredient Highlights
-
Yellow Squash: The star ingredient of the dish, yellow squash provides a mild, sweet flavor and soft texture when cooked, perfect for a casserole.
-
Cheddar Cheese: The melted cheddar cheese gives the casserole its creamy and flavorful base, with a rich, savory kick.
-
Sour Cream and Mayonnaise: These two creamy ingredients help to bind the casserole together, making it rich and velvety.
-
Onion and Garlic Powder: These spices add depth and savory flavor to the casserole, balancing out the sweetness of the squash.
-
Crackers or Breadcrumbs: The crushed crackers or breadcrumbs create a crispy, golden topping that contrasts beautifully with the soft interior.
Instructions
Prepare the Squash:
-
Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch casserole dish with butter or cooking spray.
-
Slice the Squash: Wash and slice the squash into thin, even rounds. You can also slice it into half-moons for a slightly different texture.
-
Cook the Squash: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the sliced squash and chopped onion. Sauté for 5-7 minutes, or until the squash becomes tender and the onion softens. Stir occasionally to ensure even cooking. You want the squash to release some moisture, but avoid overcooking it to the point where it becomes mushy.
Mix the Casserole Base:
-
Prepare the Creamy Mixture: In a large mixing bowl, combine the mayonnaise, sour cream, shredded cheddar cheese, grated Parmesan cheese, garlic powder, onion powder, dried thyme (if using), salt, and pepper. Stir well to combine.
-
Combine with Squash: Once the squash mixture has cooled slightly, stir it into the creamy mixture. Mix until the squash is well-coated, and the casserole mixture is even.
Assemble the Casserole:
-
Transfer to Casserole Dish: Spoon the squash and creamy mixture into the prepared casserole dish. Use a spatula to spread it out evenly and make sure it’s well-packed in the dish.
-
Top with Crumbs: In a small bowl, combine the crushed crackers or breadcrumbs with the melted butter. Stir until the crumbs are evenly coated. Sprinkle this crumb mixture over the top of the casserole, ensuring it’s evenly distributed to create a nice, golden topping.
Bake the Casserole:
-
Bake: Place the casserole in the preheated oven and bake for 45-50 minutes, or until the top is golden brown and crispy, and the casserole is bubbling around the edges. You can check the doneness by gently pressing on the casserole—if it’s firm and the top is golden, it’s ready.
-
Cool and Serve: Once baked, let the casserole cool for a few minutes before serving. This allows the flavors to set and makes it easier to scoop out portions.
Nutrition
- Serving Size: 10
- Calories: 300
- Fat: 20g
- Carbohydrates: 15g
- Protein: 8g
Conclusion
Southern Squash Casserole is a delightful dish that combines the comforting flavors of tender squash with rich, creamy cheese and a crispy topping. Perfect for any occasion, this casserole will surely be a hit with family and friends. With its simple ingredients and easy preparation, it’s a go-to side dish for both everyday meals and special occasions. Customize it to suit your tastes, and enjoy this Southern classic that’s sure to become a favorite in your home.