This Easy Yellow Squash Casserole is a warm and cheesy dish that’s perfect for any meal! With layers of tender squash, creamy cheese, and crunchy topping, it’s simply delicious.
I love how simple this recipe is. You just mix everything up, bake, and enjoy it with family or friends. Plus, it’s a great way to sneak in some veggies! 🍽️
Key Ingredients & Substitutions
Yellow Squash: Fresh yellow squash adds a lovely texture and flavor. If it’s unavailable, zucchini can be a great substitute, though it will change the flavor slightly.
Onion: A small onion enhances the dish’s overall taste. If you prefer milder flavors, consider using green onions or shallots instead.
Cheddar Cheese: I like using sharp cheddar for its rich flavor. However, you can replace it with Monterey Jack, colby, or even a dairy-free cheese if you have dietary restrictions.
Sour Cream: For a tangy bite, sour cream is perfect. Greek yogurt can also be used for a healthier option, while keeping a similar texture.
Crackers/Breadcrumbs: Buttery crackers give a nice crunch. If you’re gluten-free, opt for gluten-free breadcrumbs or crushed cornflakes instead.
How Do You Properly Cook the Squash Before Baking?
Cooking the squash before baking is important for texture and flavor. Here’s how to do it right:
- Start by boiling salted water in a large pot. Salt helps enhance the flavor of the squash.
- Add the sliced yellow squash and chopped onion, cooking for about 5 minutes until they’re tender.
- Drain thoroughly, ensuring you squeeze out excess moisture to avoid a watery casserole.
Getting this step right helps your casserole set perfectly and keeps it from becoming soggy!
Easy Yellow Squash Casserole
Ingredients You’ll Need:
For The Casserole:
- 4 cups sliced yellow squash (about 4 medium squash)
- 1 small onion, finely chopped
- 1 cup shredded cheddar cheese
- 1 cup sour cream
- 2 large eggs, beaten
- 1/2 cup all-purpose flour
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon garlic powder (optional)
For The Topping:
- 1 cup crushed buttery crackers or breadcrumbs
- 2 tablespoons melted butter
How Much Time Will You Need?
To prepare this casserole, you’ll need about 15 minutes of prep time and then around 30-35 minutes for baking. So in total, you’re looking at roughly 50 minutes from start to finish—perfect for a busy weeknight!
Step-by-Step Instructions:
1. Preheat and Prep:
First things first, preheat your oven to 350°F (175°C). While the oven warms up, grab a 9×9-inch baking dish and give it a light greasing with cooking spray or butter. This will help prevent sticking once the casserole is baked.
2. Cook the Squash and Onion:
Next, place the sliced yellow squash and chopped onion into a large pot filled with boiling salted water. Let them cook for about 5 minutes or until the squash is tender. Once done, drain them well. It’s super important to squeeze out any extra moisture using a clean kitchen towel or cheesecloth to keep your casserole nice and firm.
3. Combine the Ingredients:
In a large bowl, mix together your cooked squash and onions with shredded cheddar cheese, sour cream, beaten eggs, flour, salt, pepper, and garlic powder if you chose to use it. Stir everything together until it’s well combined and creamy.
4. Spread in the Dish:
Pour the mixture into your prepared baking dish, spreading it out evenly. This is going to be the heart of your casserole, so make sure it looks nice and even!
5. Prepare the Topping:
In a small bowl, mix the crushed crackers or breadcrumbs with the melted butter until they’re coated. This will add a crunchy topping to your casserole. Sprinkle this mixture evenly over the squash layer so every bit gets that delicious crunch.
6. Bake Until Golden:
Now it’s time for baking! Place the dish in the oven and let it bake uncovered for about 30-35 minutes. You are looking for the casserole to be set and the topping to turn golden brown. Ah, the smell of warm casserole is wonderful!
7. Cool and Serve:
Once it’s done, take it out of the oven and let it cool for a few minutes. This rest time helps everything settle. Then, scoop out portions and enjoy your warm, cheesy, and comforting yellow squash casserole!
This dish is fantastic as a side to roasted meats or alongside a fresh green salad. Enjoy every delicious bite!
FAQ for Easy Yellow Squash Casserole
Can I Use Different Types of Squash?
Absolutely! While yellow squash is traditional for this recipe, you can substitute it with zucchini for a similar texture. Just keep in mind that zucchini has a milder flavor.
How Do I Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. To reheat, simply warm it in the microwave or oven until heated through. Add a splash of cream or a sprinkle of cheese on top for a nice refresh!
Can I Make This Recipe Ahead of Time?
Yes! You can prepare the casserole a day in advance. Simply follow the recipe up to the baking step, cover it tightly, and refrigerate. When ready to bake, just remove it from the fridge and pop it in the oven—this may require an extra few minutes of cooking time.
What Can I Use Instead of Sour Cream?
If you’re not a fan of sour cream, you can substitute it with Greek yogurt for a healthier option or use a plant-based yogurt for a dairy-free version. Both will give you a similar creamy texture!
