Yellow squash casserole is a classic Southern side dish that combines tender yellow squash with a creamy, cheesy base and a crunchy topping. It works so well because the natural sweetness of the squash balances perfectly with the savory flavors, making it a crowd-pleaser for family dinners, potlucks, or holiday meals.
Ingredients
- 4 cups yellow squash, sliced (about 3 medium squash)
- 1 medium onion, finely chopped
- 1 cup shredded sharp cheddar cheese
- 1/2 cup sour cream
- 1/2 cup mayonnaise
- 2 large eggs, beaten
- 1 cup crushed buttery crackers (such as Ritz)
- 2 tablespoons unsalted butter, melted
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon garlic powder (optional)
- 1/4 teaspoon paprika (optional, for topping color)
Instructions
- Preheat your oven to 350°F (175°C). Lightly grease a 9×9-inch baking dish or a similar-sized casserole dish.
- Wash and slice the yellow squash into 1/4-inch thick rounds. Place the sliced squash in a large pot with salted water and bring to a boil. Cook for about 5 minutes or until the squash is just tender but not mushy. Drain well and press out excess moisture using a clean kitchen towel or paper towels to avoid a watery casserole.
- In a large bowl, combine the cooked squash, chopped onion, shredded cheddar cheese, sour cream, mayonnaise, and beaten eggs. Add salt, pepper, and garlic powder if using. Mix gently until all ingredients are evenly combined.
- Transfer the mixture into the prepared baking dish and spread it out evenly.
- In a small bowl, mix the crushed crackers with melted butter until the crumbs are evenly coated. Sprinkle this mixture evenly over the top of the casserole. If desired, lightly dust with paprika for a nice color.
- Bake uncovered in the preheated oven for 30-35 minutes or until the topping is golden brown and the casserole is bubbly around the edges.
- Remove from the oven and let it cool for 5-10 minutes before serving. This allows the casserole to set and makes it easier to portion.
Tips
- Drain squash well: Yellow squash contains a lot of water, so draining and pressing out excess moisture is crucial to prevent a soggy casserole.
- Cheese options: Sharp cheddar is traditional, but you can substitute with Monterey Jack, Colby, or a mild cheddar blend for a different flavor profile.
- Make ahead: You can prepare the casserole up to the point of baking, cover it tightly, and refrigerate for up to 24 hours before baking.
- Cracker topping alternatives: If you don’t have buttery crackers, crushed breadcrumbs or crushed cornflakes mixed with melted butter also work well for a crunchy topping.
Serving Suggestions
Yellow squash casserole is a versatile side dish that pairs beautifully with roasted or grilled meats such as chicken, pork, or beef. It also complements Southern staples like fried chicken and baked ham. For a vegetarian meal, serve alongside a fresh green salad and crusty bread. The creamy texture and cheesy flavor make it a comforting addition to any dinner plate.
Variations
You can easily customize this casserole to suit your taste or dietary needs. Add cooked crumbled bacon or diced ham for extra savory depth. Mixing in finely chopped bell peppers or mushrooms adds texture and flavor. For a lighter version, swap mayonnaise and sour cream for Greek yogurt and use reduced-fat cheese. To make it gluten-free, substitute the cracker topping with gluten-free breadcrumbs or crushed gluten-free crackers.
Storage and Reheating
Store leftover yellow squash casserole in an airtight container in the refrigerator for up to 3 days. When reheating, cover the casserole with foil and warm in a 325°F (160°C) oven for about 15-20 minutes until heated through. Alternatively, microwave individual portions covered loosely with a microwave-safe lid or plastic wrap for 1-2 minutes, stirring halfway through for even heating. Avoid freezing this casserole as the texture of the squash and the creamy base may become watery upon thawing.
Frequently Asked Questions
Can I use frozen yellow squash for this casserole?
Yes, you can use frozen yellow squash, but be sure to thaw it completely and drain any excess water thoroughly before mixing it into the casserole. Frozen squash tends to release more moisture, so extra draining helps keep the casserole from becoming soggy.
Is it necessary to boil the squash before baking?
Boiling or steaming the squash before baking softens it and reduces moisture content, which improves the casserole’s texture. If you prefer, you can sauté the squash briefly instead, but avoid skipping this step entirely to prevent a watery dish.
Can I make this casserole dairy-free?
Yes, substitute the cheddar cheese with a dairy-free cheese alternative, use dairy-free sour cream or plain coconut yogurt, and replace mayonnaise with a vegan mayo. The texture might vary slightly, but the casserole will still be tasty.
How can I make this casserole more crispy on top?
Using crushed buttery crackers mixed with melted butter creates a nice crunchy topping. You can also sprinkle some grated Parmesan cheese over the cracker topping before baking for extra crispness and flavor.
Can I double this recipe for a larger crowd?
Absolutely. Use a larger baking dish or two 9×9-inch pans. Baking time may increase slightly; check for a golden brown top and bubbling edges. Cover loosely with foil if the topping browns too quickly.
What’s the best way to reheat leftovers without drying out the casserole?
Reheat covered in the oven at a moderate temperature (325°F) to retain moisture. Adding a splash of milk or cream before reheating can help keep it creamy. Avoid microwaving for long periods as it can dry out the dish.
This yellow squash casserole is a delicious and easy way to enjoy seasonal squash with a comforting, cheesy twist. With simple ingredients and straightforward steps, it’s perfect for both everyday meals and special occasions. Try the variations and tips to make it your own and keep this Southern classic in your recipe rotation.
Enjoy your baking and delicious results!
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