This Southern baked yellow squash recipe is a delightful way to enjoy the fresh flavors of summer squash. Combining yellow squash, onion, and cheddar cheese with a crispy breadcrumb topping, this dish is both comforting and delicious. Perfect as a side dish for any meal, it brings a touch of Southern charm to your table.
While most of the ingredients in this recipe are commonly found in your pantry, you might need to pick up fresh yellow squash and onion from the supermarket. Ensure you choose firm, bright yellow squash without any blemishes. If you don't have cheddar cheese or breadcrumbs on hand, these can also be easily found in the dairy and baking aisles respectively.

Ingredients For Southern Baked Yellow Squash Recipe
Yellow squash: Fresh summer squash that provides a mild, slightly sweet flavor and tender texture.
Onion: Adds a savory depth and slight sweetness to the dish.
Cheddar cheese: Shredded cheese that melts beautifully, adding a rich, creamy taste.
Breadcrumbs: Provides a crispy topping that contrasts with the tender squash.
Butter: Melted to add richness and help bind the topping.
Salt: Enhances the natural flavors of the ingredients.
Black pepper: Adds a hint of spice and depth to the dish.
Technique Tip for This Recipe
When preparing the yellow squash, make sure to slice it evenly to ensure uniform cooking. This will help the squash become tender at the same rate, avoiding any pieces that are undercooked or overcooked. Additionally, consider using panko breadcrumbs instead of regular breadcrumbs for a crunchier topping.
Suggested Side Dishes
Alternative Ingredients
yellow squash - Substitute with zucchini: Zucchini has a similar texture and mild flavor, making it a great alternative in baked dishes.
onion - Substitute with shallots: Shallots offer a slightly sweeter and more delicate flavor, which can enhance the dish.
cheddar cheese - Substitute with Monterey Jack cheese: Monterey Jack melts well and has a mild flavor that complements the other ingredients.
breadcrumbs - Substitute with crushed crackers: Crushed crackers provide a similar crunchy texture and can add a bit of extra flavor.
butter - Substitute with olive oil: Olive oil can provide a similar richness and moisture to the dish while being a healthier option.
salt - Substitute with soy sauce: Soy sauce can add a depth of flavor and umami, though you may want to reduce the amount to avoid overpowering the dish.
black pepper - Substitute with white pepper: White pepper has a similar heat but a slightly different flavor profile, which can add a subtle complexity.
Other Alternative Recipes Similar to This Dish
How to Store or Freeze This Dish
- Allow the Southern baked yellow squash to cool completely before storing. This helps prevent condensation, which can make the dish soggy.
- Transfer the cooled yellow squash casserole to an airtight container. If you don't have a container large enough, you can use heavy-duty aluminum foil or plastic wrap to cover the baking dish tightly.
- Store the container in the refrigerator. The baked squash will stay fresh for up to 3-4 days.
- For longer storage, consider freezing the yellow squash casserole. First, portion the dish into individual servings. This makes it easier to reheat only what you need.
- Wrap each portion tightly in plastic wrap, then place them in a freezer-safe bag or container. Label with the date to keep track of freshness.
- When ready to enjoy, thaw the frozen squash casserole in the refrigerator overnight. This slow thawing process helps maintain the texture and flavor.
- Reheat the thawed squash casserole in a preheated oven at 350°F (175°C) for about 15-20 minutes or until heated through. Alternatively, you can use a microwave, but be sure to cover the dish to retain moisture.
- If reheating from frozen, cover the casserole with aluminum foil and bake at 350°F (175°C) for 30-40 minutes, removing the foil for the last 10 minutes to allow the top to crisp up.
How to Reheat Leftovers
Oven Method: Preheat your oven to 350°F (175°C). Place the Southern Baked Yellow Squash in an oven-safe dish and cover it with aluminum foil to prevent it from drying out. Heat for about 15-20 minutes or until warmed through. This method helps maintain the crispiness of the breadcrumbs and the tenderness of the squash.
Microwave Method: Transfer the leftovers to a microwave-safe dish. Cover with a microwave-safe lid or a damp paper towel to retain moisture. Heat on medium power for 2-3 minutes, stirring halfway through to ensure even heating. This method is quick but may soften the breadcrumbs.
Stovetop Method: Heat a non-stick skillet over medium heat. Add a small amount of butter or olive oil. Place the Southern Baked Yellow Squash in the skillet and cover with a lid. Heat for about 5-7 minutes, stirring occasionally, until warmed through. This method can help retain some of the crispiness while ensuring the squash is evenly heated.
Air Fryer Method: Preheat your air fryer to 350°F (175°C). Place the leftovers in the air fryer basket in a single layer. Heat for about 5-7 minutes, shaking the basket halfway through. This method is excellent for restoring the crispiness of the breadcrumbs while keeping the squash tender.
Best Tools for This Recipe
Oven: Used to bake the squash mixture at a consistent temperature of 350°F (175°C).
Mixing bowl: Used to combine the sliced yellow squash, chopped onion, cheddar cheese, breadcrumbs, melted butter, salt, and black pepper.
Baking dish: Greased to prevent sticking and used to hold the squash mixture while it bakes.
Knife: Used to slice the yellow squash and chop the onion.
Cutting board: Provides a safe surface for slicing the squash and chopping the onion.
Measuring cups: Used to measure out the 4 cups of yellow squash, 1 cup of onion, 1 cup of cheddar cheese, and 0.5 cup of breadcrumbs.
Measuring spoons: Used to measure the 2 tablespoons of melted butter, 1 teaspoon of salt, and 0.5 teaspoon of black pepper.
Wooden spoon: Used to mix all the ingredients together in the mixing bowl.
Oven mitts: Used to safely handle the hot baking dish when removing it from the oven.
How to Save Time on Making This Recipe
Pre-slice the squash: Slice the yellow squash in advance and store it in an airtight container in the fridge.
Use pre-chopped onions: Save time by buying pre-chopped onions from the store.
Shred cheese ahead: Shred the cheddar cheese beforehand and keep it in the fridge.
Pre-mix dry ingredients: Combine the breadcrumbs, salt, and black pepper in a bowl ahead of time.
Melt butter in microwave: Quickly melt the butter in the microwave instead of on the stove.

Southern Baked Yellow Squash Recipe
Ingredients
Main Ingredients
- 4 cups Yellow Squash, sliced
- 1 cup Onion, chopped
- 1 cup Cheddar Cheese, shredded
- 0.5 cup Breadcrumbs
- 2 tablespoon Butter, melted
- 1 teaspoon Salt
- 0.5 teaspoon Black Pepper
Instructions
- Preheat your oven to 350°F (175°C).
- In a mixing bowl, combine sliced yellow squash, chopped onion, cheddar cheese, breadcrumbs, melted butter, salt, and black pepper.
- Transfer the mixture to a greased baking dish.
- Bake in the preheated oven for 30 minutes or until the top is golden brown and the squash is tender.
- Let it cool for a few minutes before serving. Enjoy!
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