Southern Squash Casserole – Creamy, Cheesy & Classic Comfort

Introduction

Classic Yellow Squash Casserole is a beloved Southern side dish that brings comfort and flavor to any table. With tender squash, creamy cheese, and a buttery crumb topping, it’s a staple at potlucks, holidays, and family dinners. Whether you’re using garden-fresh squash or market produce, this casserole is a warm, cheesy celebration of Southern cooking at its best.

I learned this version from my grandmother, who would pull fresh squash from the garden and cook it into this golden, bubbling casserole. It’s warm, nostalgic, and surprisingly easy to make. Whether you’re feeding a crowd or just want a taste of home, this squash casserole never disappoints.

Why You’ll Love This Southern Squash Casserole

• A true Southern classic with simple pantry ingredients

• Great use of fresh summer squash

• Perfect balance of creamy, cheesy, and crunchy

• Make-ahead and freezer-friendly

• Loved by kids and adults alike

Ingredients

• 2 lbs yellow squash, sliced

• 1 small yellow onion, diced

• 1 cup shredded cheddar cheese

• 2 large eggs

• 1/2 cup sour cream

• 1/4 cup mayonnaise

• 1/2 tsp salt

• 1/4 tsp black pepper

• 1 sleeve Ritz crackers (or buttery round crackers), crushed

• 2 tbsp butter, melted

Instructions

Step 1: Preheat & Prep

Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish and set aside.

Step 2: Cook the Squash

In a large skillet, sauté the sliced squash and diced onion over medium heat for about 10 minutes, or until soft and most of the moisture has evaporated.

Step 3: Make the Filling

In a large bowl, combine the cooked squash and onions with cheddar cheese, eggs, sour cream, mayonnaise, salt, and pepper. Mix well.

Step 4: Assemble the Casserole

Transfer the squash mixture to the prepared baking dish. Top with the crushed crackers and drizzle melted butter evenly over the top.

Step 5: Bake

Bake uncovered for 30–35 minutes, or until the top is golden brown and the casserole is bubbling around the edges.

Tips for the Best Squash Casserole

• Drain squash well after cooking to avoid a soggy casserole.

• Use fresh summer squash for best texture and flavor.

• Swap crackers for panko or gluten-free crumbs if needed.

• Add a pinch of cayenne or paprika for a slight kick.

• Make it ahead and refrigerate unbaked for up to 24 hours.

Serving Suggestions

This Southern Squash Casserole pairs beautifully with:

• Fried chicken or roasted pork

• BBQ ribs and baked beans

• Cornbread and sweet tea

• As a side at Thanksgiving or Easter

• With grilled meats at your next cookout

Storage & Reheating

• Fridge: Store leftovers in an airtight container for up to 4 days.

• Freezer: Wrap tightly and freeze unbaked for up to 2 months.

• Reheat: Bake at 350°F for 15–20 minutes until heated through.

Nutrition Info (Per Serving – 8 servings)

• Calories: 210

• Protein: 6g

• Fat: 16g

• Saturated Fat: 7g

• Carbohydrates: 10g

• Fiber: 2g

• Sugar: 3g

• Cholesterol: 70mg

• Sodium: 280mg

FAQs

Can I use zucchini instead of squash?
Yes! You can substitute zucchini or use a mix of both for variation.

Is this casserole keto-friendly?
Not quite as written, but you can reduce the carbs by swapping crackers with crushed pork rinds and using full-fat dairy.

Can I make this dairy-free?
Try dairy-free cheese and sour cream substitutes, but note the texture may vary.

How do I keep the topping crispy?
Don’t cover the dish while baking and be sure the squash isn’t too watery before mixing.

Final Thoughts

There’s something special about a dish that brings people together, and this Southern Squash Casserole is exactly that kind of recipe. It’s creamy, cheesy, a little crunchy, and loaded with comforting flavor. Whether you’re cooking for family, a holiday meal, or a casual cookout, this casserole is a Southern staple that belongs on your table.

Southern Squash Casserole – Creamy, Cheesy & Classic Comfort

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• Author: Helen Bittner
• Total Time: 50 minutes
• Yield: 8 servings 1x
• Diet: Gluten Free

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Description

Classic Yellow Squash Casserole is a creamy, cheesy Southern-style comfort food made with tender squash, onions, and a buttery cracker topping. Perfect for holidays and potlucks.

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Ingredients

Scale 1x2x3x

– 2 lbs yellow squash, sliced

• 1 small onion, finely chopped

• 1 cup shredded cheddar cheese

• 2 large eggs

• 1/2 cup sour cream

• 1/4 cup mayonnaise

• 1/2 tsp salt

• 1/4 tsp black pepper

• 1 sleeve Ritz crackers, crushed

• 2 tbsp butter, melted

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Instructions

• 1. Preheat oven to 350°F (175°C); grease a 9×13-inch baking dish.

2. Sauté squash and onion in a skillet over medium heat for 8–10 minutes, until soft and moisture is mostly evaporated.

3. In a bowl, mix cooked vegetables with eggs, sour cream, mayonnaise, cheddar, salt, and pepper.

4. Pour mixture into baking dish.

5. Top with crushed crackers and drizzle with melted butter.

6. Bake uncovered for 30–35 minutes until golden and bubbly.

Notes

2. – Drain cooked squash well to avoid watery casserole.

• Add a pinch of cayenne for a kick.

• Use panko or gluten-free crumbs if needed.

• Prep Time: 15 minutes
• Cook Time: 35 minutes
• Category: Side Dish
• Method: Baked
• Cuisine: Southern American

Nutrition

• Serving Size: 1 slice (approx. 1/8 of pan)
• Calories: 210 kcal
• Sugar: 4 g
• Sodium: 280 mg
• Fat: 16 g
• Saturated Fat: 7 g
• Unsaturated Fat: 7 g
• Trans Fat: 0 g
• Carbohydrates: 10 g
• Fiber: 2 g
• Protein: 6 g
• Cholesterol: 70 mg

Keywords: classic yellow squash casserole, southern squash bake, holiday side dish, cheesy squash recipe