Southern Living Old-School Squash Casserole Recipe

Posted on February 7, 2025

When it comes to Southern classics, few dishes capture the essence of comfort food quite like squash casserole. This dish has become a time-honored staple across Southern homes—a glorious blend of tender squash, creamy filling, and that irresistible crunchy topping.

Whether it’s gracing the holiday spread or complementing a weeknight dinner, the Southern Living Old-School Squash Casserole recipe is one to keep in your arsenal.

This guide will walk you through everything you need to make this iconic dish like a pro. From understanding its popularity to mastering the recipe, you’ll have all the tools (and tips) to craft the perfect old-school squash casserole every time.

Table of Contents

Why Is This Old-School Squash Casserole So Popular?

The magic of this dish is all in the mix of flavors and textures. You’ve got soft, slightly sweet summer squash paired with a creamy, cheesy filling that’s pure comfort food. Then, to top it off, there’s that buttery crunch from crackers or breadcrumbs—such a perfect contrast to the silky base. It’s rich, nostalgic, and so satisfying!

Part of its popularity is also its flexibility—you can serve it as a star side dish for Thanksgiving or as part of a casual Sunday supper. Plus, it’s an ideal way to showcase seasonal produce, making it a farm-to-table favorite.

Southerners love their heritage recipes, and this casserole combines the heart of tradition with flavors that resonate in every generation.

Ingredients You’ll Need for Old-School Squash Casserole

Gather these pantry and fridge staples to bring this timeless recipe to life. Quality ingredients make all the difference, so don’t skimp when possible!

Yellow squash (6 cups, sliced): Look for firm, fresh squash.
Onion (1 medium, diced): Vidalia or yellow onions work well.
Eggs (2 large): Binds the ingredients.
Mayonnaise (½ cup): For creaminess.
Cheddar cheese (1 cup, grated): Sharp cheddar adds flavor.
Ritz crackers (1 sleeve, crushed): Buttery topping.
Butter (4 tbsp, melted): For a golden, crispy finish.
Salt and pepper (to taste).

Tools to Have on Hand

For seamless preparation, ensure you have the following kitchen tools ready to go.

. Skillet
Colander
Mixing Bowls
Baking Dish
Spatula/Spoon
Knife & Cutting Board

Step-by-Step Recipe for Old-School Squash Casserole

Step 1: Prepare the Squash

Wash the yellow squash under cool water. Use a knife and cutting board to slice the squash into thin, even pieces. This helps them cook evenly. Set the squash aside and boil about two quarts of water in a pot. Add the squash and cook for about 5 minutes, or until soft. Drain the squash in a colander and let it cool a bit before moving on.

Step 2: Sauté the Onion

In the same pan, heat a little butter over medium heat. Chop the onion into small pieces and add it to the pan. Cook the onion for 3–5 minutes, stirring often, until it gets soft and clear. This step gives the casserole extra flavor by making the onion sweet and tasty.

Step 3: Mix the Casserole Ingredients

In a big bowl, mix the cooked squash and sautéed onions. Add sour cream, shredded cheddar cheese, and cream of chicken soup. Stir everything together until it’s well mixed. Add salt and pepper to taste. This creates the creamy base for your casserole.

Step 4: Assemble the Casserole

Preheat your oven to 350°F (175°C). Grease a baking dish with butter or cooking spray. Pour the squash mixture into the dish and spread it out evenly. Sprinkle crushed Ritz crackers on top, then drizzle melted butter over the crackers. This will make the topping crispy and buttery.

Step 5: Bake the Casserole

Put the dish in the oven and bake for 25–30 minutes. It’s ready when the top is golden and the edges are bubbling. Take it out of the oven carefully and let it cool for about 5 minutes before serving. This helps the flavors come together and makes it easier to serve.

Step 6: Serve and Enjoy

Scoop out portions with a serving spoon. Squash casserole tastes great with roasted meats, fresh salads, or even on its own. Add some herbs or extra cheese on top if you want to make it look fancy. Enjoy this warm, comforting dish!

How to Serve Old-School Squash Casserole

Squash casserole plays nicely in nearly any mealtime lineup. Here are serving suggestions to make the most of this dish:

Main Course Pairing: Serve alongside BBQ ribs, fried chicken, or baked ham for a hearty Southern meal.
Vegetarian Spread: Pair with cornbread, a fresh garden salad, and green bean almondine for a lighter, meatless option.
Holiday Highlight: Make it a must-have addition to your Thanksgiving or Christmas dinner table—it’s sure to compete with stuffing for the most-loved dish!
Brunch Favorite Serve warmed leftovers with a poached egg and hash browns for a luxurious brunch item.

Tips for Storing Leftovers

If you happen to have leftovers (though unlikely), here’s how to store them for later enjoyment:

Refrigerate: Let the casserole cool completely, then cover it tightly or store it in an airtight container. Keep in the fridge for up to 3 days.
Freeze: Assemble the casserole but don’t bake it. Wrap it tightly in plastic wrap and foil, then freeze for up to 3 months. Bake directly from frozen, adding a few extra minutes to the cooking time.
Reheat: Heat leftovers in the oven at 325°F for 10-15 minutes or microwave smaller portions.

Expert Tips for the Perfect Squash Casserole

Choose Fresh Ingredients: Select fresh squash that is firm to the touch and brightly colored for the best flavor and texture.
Drain Excess Moisture: Squash has a high water content, so pat it dry or lightly salt and drain it before cooking to avoid a watery casserole.
Use a Flavorful Cheese: Opt for sharp cheddar, Parmesan, or a blend of cheeses to add depth and enhance the overall taste.
Add a Crunchy Topping: Sprinkle breadcrumbs, crushed crackers, or fried onions on top for a delicious, crispy texture.
Season Generously: Use herbs such as thyme, parsley, or rosemary, along with garlic or onion, to elevate the flavor profile.
Cook Evenly: Cut the squash into uniformly sized pieces to ensure it cooks evenly throughout the dish.
Experiment with Add-Ins: Consider adding ingredients like cooked bacon, mushrooms, or bell peppers for added variety and richness.

Frequently Asked Questions

Q1. Can I use zucchini instead of yellow squash?

Yes, zucchini can be used as a substitute for yellow squash in most recipes, as they have similar textures and cooking properties, though the flavor may be slightly milder.

Q2. Can I make this casserole ahead of time?

Yes, this casserole can be prepared ahead of time. Assemble the dish completely, cover it tightly, and refrigerate for up to 24 hours before baking.

Q3. How do I ensure the topping stays crunchy?

To keep the topping crunchy, ensure it is added right before baking. Additionally, avoid covering the casserole while baking, as trapping steam can make the topping soggy.

Q5. What substitutions can I make for dietary restrictions?

For dietary preferences or restrictions, several substitutions can be made. Use a dairy-free or plant-based alternative for any cream or cheese elements if avoiding dairy. Gluten-free breadcrumbs or crackers can replace the standard topping. Be sure to verify all ingredient labels to meet specific dietary needs.

Q6. What side dishes pair well with this casserole?

This casserole pairs wonderfully with a crisp green salad, roasted vegetables, or freshly baked bread. For a more hearty meal, consider serving it alongside grilled chicken or fish to complement the rich, savory flavors.

Conclusion

Squash casserole is a tasty and comforting dish that never gets old. With its creamy inside, crunchy topping, and many ways to serve it, it’s sure to become a favorite at your table. You can stick to the classic recipe or make it your own, and it’s always a hit with family and friends. So grab some fresh squash next time you’re at the store and try making this simple, yummy dish yourself. You’ll love it!