This Easy Yellow Squash Casserole is a comforting dish filled with tender squash, cheese, and a crispy topping. It’s perfect as a side or a light meal on its own!
The best part? It’s super simple to make and tastes so good that even squash skeptics might change their minds. I love serving it with a sprinkle of fresh herbs on top—it makes everything pop! 🌱
Key Ingredients & Substitutions
Yellow Squash: Fresh yellow squash is the star of this dish. If you’re in a pinch, zucchini can work as a substitute, though it’s milder in flavor.
Onion: A medium onion adds sweetness and depth. If you prefer less flavor, use green onions or shallots. Also, feel free to skip it for low FODMAP diets.
Cheddar Cheese: I love using sharp cheddar for a bold taste, but you can swap it for Monterey Jack or a dairy-free cheese if you want a healthier or vegan version.
Mayonnaise & Sour Cream: These give creaminess and flavor. You could use Greek yogurt instead for a lighter touch, or a vegan mayo for a dairy-free option.
Buttery Crackers: The crispy topping is essential. If you’re gluten-free, use gluten-free cracker crumbs or crushed nuts for crunch.
How Do I Cook the Squash Without Making It Mushy?
Cooking the squash just right is key to maintaining texture. Here’s how to do it:
- Slice the yellow squash evenly for consistent cooking.
- Heat olive oil in a skillet on medium heat, then add onions and garlic first. This builds flavor.
- Add the squash after the onions are softened. Cook for 5-7 minutes, stirring occasionally, just until tender.
- Don’t overcook—remove from heat while it still has a slight bite!
Following this technique will ensure your casserole has great texture. Enjoy!
Easy Yellow Squash Casserole
Ingredients You’ll Need:
Main Ingredients:
- 4 cups yellow squash, sliced (about 4 medium squash)
- 1 medium onion, finely chopped
- 2 cloves garlic, minced
- 1 cup shredded cheddar cheese
- 1/2 cup mayonnaise
- 1/2 cup sour cream
- 2 large eggs, lightly beaten
Topping Ingredients:
- 1 cup crushed buttery crackers (such as Ritz crackers)
- 3 tablespoons unsalted butter, melted
Seasoning:
- Salt and pepper to taste
- 1/2 teaspoon dried thyme or fresh thyme leaves (optional)
For Sautéing:
- 1 tablespoon olive oil
How Much Time Will You Need?
This delicious casserole will take about 15 minutes to prepare and an additional 30-35 minutes to bake. In total, it’s roughly 50 minutes from start to finish. You’ll love how quick and easy this dish comes together, making it perfect for any meal!
Step-by-Step Instructions:
1. Preheat the Oven:
First, heat your oven to 350°F (175°C). This ensures it’s at the right temperature when you’re ready to bake your casserole!
2. Sauté the Vegetables:
In a large skillet, add the olive oil and heat it over medium heat. Once hot, toss in the chopped onion and minced garlic. Sauté them for about 3-4 minutes until they become soft and fragrant. This step builds a tasty base for your casserole.
3. Cook the Yellow Squash:
Next, add the sliced yellow squash to the skillet with the onion and garlic. Stir and cook for about 5-7 minutes, just until the squash is tender but not mushy. Season with salt, pepper, and thyme if you’d like. Once done, take the skillet off the heat and let it cool slightly.
4. Combine the Filling:
In a large mixing bowl, combine the cooked squash mixture with the shredded cheddar cheese, mayonnaise, sour cream, and beaten eggs. Stir everything together until well blended, making sure the cheese and sauces coat the squash nicely.
5. Assemble in the Dish:
Grease a 9×13-inch casserole dish. Pour the squash mixture into the dish, spreading it out evenly to ensure uniform cooking.
6. Prepare the Topping:
In a small bowl, mix the crushed buttery crackers with the melted butter. This will create a tasty, crispy topping. Sprinkle this mixture evenly over the top of the casserole for a delicious crunch!
7. Bake the Casserole:
Place the casserole in the preheated oven and bake for 30-35 minutes. You’ll know it’s done when the top is golden brown and the casserole is set. Your kitchen will smell amazing at this point!
8. Cool and Serve:
Once done, let the casserole cool for a few minutes before serving. This dish is best enjoyed warm and pairs beautifully with grilled meats or a fresh green salad. Enjoy your delicious Easy Yellow Squash Casserole!
FAQ for Easy Yellow Squash Casserole
Can I Use Frozen Yellow Squash?
Yes, you can use frozen yellow squash! Just be sure to thaw it completely and drain any excess liquid before using it in the recipe. You may need to sauté it a bit longer to ensure it’s cooked through.
How Can I Make This Casserole Ahead of Time?
Absolutely! You can prepare the casserole in advance and store it covered in the refrigerator for up to 24 hours before baking. When you’re ready to bake, simply pop it in the oven for about 10 extra minutes if it’s chilled.
What’s the Best Way to Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. Reheat portions in the microwave or in the oven at 350°F until warmed through to maintain the best texture.
Can I Substitute the Cheese for a Different Type?
Yes, you can substitute the cheddar cheese with any cheese you prefer! Monterey Jack, mozzarella, or even a vegan cheese work well. Just be mindful that different cheeses may alter the flavor slightly.
