Easy Green Chile Yellow Squash Casserole Recipe

July 20, 2025

This colorful casserole combines yellow squash, zesty green chiles, and cheese for a tasty dish everyone will love. It’s perfect as a side or a main meal!

Whenever I make this casserole, it disappears fast! I like to serve it with a sprinkle of fresh herbs on top. Trust me, you’ll be the star of the dinner table! 🌟

Key Ingredients & Substitutions

Yellow Squash: This is the star of the casserole, bringing a lovely color and texture. You can substitute zucchini if you prefer or if squash isn’t available.

Green Chiles: Use canned green chiles for convenience. If you like more heat, opt for diced jalapeños or fresh green chiles. For a milder option, consider bell peppers.

Cheddar Cheese: Shredded cheddar gives great flavor. Feel free to swap in Monterey Jack or Pepper Jack cheese for a different spin or to add some spice.

Sour Cream & Mayonnaise: These add creaminess. For a lighter option, you could use Greek yogurt instead of sour cream. Just note that it will change the flavor slightly.

Crushed Crackers: These add a crunchy topping. If you’re gluten-free, you can use gluten-free crackers or even crushed nuts. Panko breadcrumbs also work well!

How Can You Ensure Your Casserole is Perfectly Cooked?

To achieve the best results with your casserole, pay attention to cooking the squash thoroughly. Here’s how:

  • Sauté the squash and onion until they’re soft and slightly caramelized. This develops flavor and prevents excess moisture in your casserole.
  • After mixing your ingredients, spread them evenly in the baking dish. This ensures even cooking.
  • Keep an eye on the casserole in the oven. You want it bubbly with a golden topping, which usually takes about 25-30 minutes.
  • Let it cool slightly before serving. This helps the casserole set a bit so it won’t be too runny when you cut it.

Keep these tips in mind, and you’ll have a delicious yellow squash casserole that everyone loves!

Easy Green Chile Yellow Squash Casserole Recipe

Easy Green Chile Yellow Squash Casserole

Ingredients You’ll Need:

  • 4 cups yellow squash, thinly sliced
  • 1 small onion, finely chopped
  • 1 (4 oz) can diced green chiles, drained
  • 1 cup shredded cheddar cheese
  • 1/2 cup sour cream
  • 1/2 cup mayonnaise
  • 1/2 cup crushed buttery crackers (e.g., Ritz)
  • 2 tablespoons butter, melted
  • 1/2 teaspoon garlic powder
  • Salt and pepper to taste
  • 1/4 cup grated Parmesan cheese (optional, for topping)

How Much Time Will You Need?

This casserole takes about 15 minutes of preparation and 25-30 minutes of baking time, totaling around 45 minutes from start to finish. It’s quick and easy, perfect for any weeknight dinner!

Step-by-Step Instructions:

1. Preheat The Oven:

Start by preheating your oven to 350°F (175°C). This ensures that your casserole will cook evenly. While the oven is heating, lightly grease a 9×9-inch baking dish to prevent sticking.

2. Sauté the Vegetables:

In a large skillet, add the sliced yellow squash and chopped onion. Sauté them over medium heat for about 8-10 minutes or until the squash is tender. Don’t forget to drain any excess liquid before moving on to the next step!

3. Prepare the Casserole Filling:

In a large mixing bowl, combine the cooked squash and onions with the diced green chiles, shredded cheddar cheese, sour cream, mayonnaise, garlic powder, salt, and pepper. Mix everything together until well combined and creamy.

4. Assemble the Casserole:

Pour the mixture into your prepared baking dish. Spread it out evenly so that every bite is delicious!

5. Add the Topping:

In a small bowl, mix the crushed buttery crackers with the melted butter until they’re well coated. Sprinkle this mixture evenly over the top of the casserole. For an extra touch, you can sprinkle grated Parmesan cheese on top as well!

6. Bake It:

Place the casserole in the oven and bake it uncovered for 25-30 minutes. It’s ready when it’s bubbly and the topping is a lovely golden brown color.

7. Serve and Enjoy:

Once it’s done baking, take it out of the oven and let it cool for a few minutes. This helps it set a little more, making it easier to serve. Then, dig in and enjoy your flavorful green chile yellow squash casserole!

Easy Green Chile Yellow Squash Casserole Recipe

FAQ for Easy Green Chile Yellow Squash Casserole

Can I Use Other Vegetables in This Casserole?

Absolutely! While yellow squash is the main ingredient, you can mix in other vegetables like zucchini, bell peppers, or even corn for added flavor and texture. Just make sure to adjust cooking times if necessary.

How Can I Make This Casserole Spicier?

If you want to crank up the heat, consider adding diced jalapeños or using hotter green chiles. Additionally, sprinkle some cayenne pepper or hot sauce into the mix for an extra kick!

Can I Prepare This Casserole Ahead of Time?

Yes! You can prepare the filling and assemble the casserole a day in advance. Just store it covered in the refrigerator and bake it when you’re ready to enjoy. It might need a few extra minutes in the oven if it’s going in cold!

How to Store Leftovers?

Store any leftovers in an airtight container in the fridge for up to 3 days. To reheat, just warm it in the oven or microwave until heated through. You can also add a splash of cream or broth to keep it moist!

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