The Best Corn and Squash Casserole Recipe
Hello there! I’m Chloe, and I’m thrilled to share a recipe that truly embodies the spirit of “Sunday Flavor.” This corn and squash casserole is a hug in a dish. It perfectly marries the sweetness of corn kernels with the tender bite of squash. It’s all brought together by a luscious, creamy sauce. I’ve spent years finding joy in seasonal ingredients, and this dish is a testament to that. It’s simple, comforting, and always brings a smile to my face. I hope it does the same for you! It’s a wonderful way to celebrate simple, delicious food.
Why You’ll Love This Corn and Squash Casserole
You’ll adore this corn and squash casserole for so many reasons.
* It’s incredibly quick to make.
* The flavors are a perfect sweet and savory mix.
* It works wonderfully as a side dish for any meal.
* It’s a fantastic way to enjoy garden-fresh goodness.
This dish truly brings that happy, Sunday feeling to your table any day of the week.
Ingredients for Your Corn and Squash Casserole
Gathering your ingredients is the first step to a delicious meal. For this delightful corn and squash casserole, you’ll need just a few pantry staples and fresh produce.
First, grab 1 tablespoon of olive oil to get things started in the skillet. You’ll also need 1 medium onion, finely chopped, and 2 cloves of garlic, minced. These aromatics build a wonderful flavor base.
For the stars of the show, you’ll need 4 cups of cubed yellow squash. Make sure they’re about bite-sized. Then, grab one 15-ounce can of corn, making sure to drain it well.
To create that luscious, creamy sauce, you’ll need 1/2 cup of milk and 1/4 cup of grated Parmesan cheese. A little bit of seasoning goes a long way, so have 1/4 teaspoon of salt and 1/8 teaspoon of black pepper ready.
And if you like a little crunch on top, you can optionally add 1/4 cup of breadcrumbs. It’s a simple addition that makes a lovely texture contrast.
Crafting Your Delicious Corn and Squash Casserole
Now for the fun part – bringing all those wonderful ingredients together! Making this corn and squash casserole is a breeze, and I’ll walk you through each step. You’ll be enjoying a warm, comforting dish in no time at all.
Step 1: Prepare Your Oven and Skillet
First things first, let’s get that oven ready. Preheat it to 375°F (190°C). While the oven heats up, place a large skillet over medium heat. Add your tablespoon of olive oil. Let it warm up a bit. This sets the stage for building all those lovely flavors.
Step 2: Sauté Aromatics and Squash
Toss your chopped onion into the warm skillet. Cook it until it starts to soften and looks a little see-through. This usually takes about 5 minutes. Next, add your minced garlic. Stir it around for just one more minute until you can really smell its amazing fragrance. Be careful not to burn the garlic! Now, add your cubed yellow squash. Let it cook for about 5 to 7 minutes. You want it to get a little tender, but not mushy.

Step 3: Combine Wet and Dry Ingredients
In a small bowl, whisk together your milk, grated Parmesan cheese, salt, and pepper. Get it all nicely combined. Now, add the drained corn to the skillet with the squash. Pour that creamy milk mixture over everything. Give it a good stir to coat all the squash and corn evenly. See how it’s starting to look so delicious already?

Step 4: Assemble and Bake the Casserole
Carefully transfer this beautiful mixture into a greased 8×8 inch baking dish. If you’re using breadcrumbs, sprinkle them right over the top. This adds a lovely golden crust. Pop the dish into your preheated oven. Bake for about 20 to 25 minutes. You’re looking for the edges to be bubbly and the top to be lightly browned. Once it’s out, let it rest for a few minutes. This helps everything settle. Then, serve it up hot and enjoy!

Tips for the Perfect Corn and Squash Casserole
Want to make your corn and squash casserole absolutely shine? I’ve picked up a few tricks over the years that make a big difference.
* Corn Choices: You can use fresh corn kernels straight off the cob, or even frozen corn. If you use frozen, just make sure to thaw it out first. Both work wonderfully!
* Flavor Boosts: Don’t be afraid to play with your spices. A tiny pinch of nutmeg can add a lovely warmth, or a dash of paprika gives a hint of smoky color.
* Creamy Dreamy: For an extra-rich casserole, try swapping half the milk for half-and-half. It makes the sauce even more decadent and luxurious.
These little tweaks can take your simple side dish to a whole new level of deliciousness. Give them a try!
Ingredient Substitutions for Corn and Squash Casserole
Sometimes you need to make a few swaps in the kitchen, and that’s perfectly okay! This corn and squash casserole is quite forgiving.
* Squash Alternatives: If you can’t find yellow squash, don’t worry. Zucchini or even a mix of summer squash varieties work beautifully. Just cube them up the same way.
* Dairy-Free Friends: Looking for a dairy-free option? Unsweetened almond milk or oat milk can replace the regular milk. For the cheese, a dairy-free Parmesan alternative works well.
* Cheese Choices: While Parmesan adds a lovely salty bite, you could also try a little shredded cheddar or Monterey Jack for a different flavor profile. Just a touch will do!
Serving and Storing Your Corn and Squash Casserole
This warm corn and squash casserole is a fantastic partner for so many meals.
It pairs wonderfully with grilled chicken, roasted pork, or even a hearty steak.
Got leftovers? Lucky you!
Store any remaining casserole in an airtight container in the refrigerator for up to 3 days.
To reheat, gently warm it in the oven or microwave until heated through.
Frequently Asked Questions about Corn and Squash Casserole
Got questions about this yummy corn and squash casserole? I’ve got answers!
Can I make this corn and squash casserole ahead of time?
Yes, you absolutely can! To make this corn and squash casserole ahead, prepare it right up until the baking step. Cover it tightly and keep it in the fridge for up to 24 hours. When you’re ready to bake, let it sit on the counter for about 20 minutes to lose its chill. You might need to add a few extra minutes to the baking time. It’s a great time-saver for busy weeknights!
What other vegetables can I add to this casserole?
This corn and squash casserole is a great base for other veggies. Try adding some chopped bell peppers along with the onions for a pop of color and flavor. A handful of fresh spinach wilted in at the end is also delicious. Even some diced zucchini or a can of drained diced tomatoes can work wonders!
Is this corn and squash casserole recipe vegetarian?
Yes, this corn and squash casserole recipe is indeed vegetarian. It uses simple, plant-based ingredients like squash, corn, onion, and garlic, along with dairy like milk and Parmesan cheese. If you need to make it vegan, just use your favorite dairy-free milk and a vegan Parmesan alternative. It’s quite adaptable!

This nutritional information is an estimate and may vary based on the specific ingredients and brands used.
Share Your Sunday Flavor Creations
Have you tried this delightful corn and squash casserole? We’d love to hear about your experience and see your creations! Share your photos and thoughts in the comments below.
PrintAmazing Corn Squash Casserole Taste
This casserole blends sweet corn kernels with tender squash in a creamy sauce, creating a comforting and delicious side dish perfect for any meal.
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 60 minutes
- Yield: 8-10 servings
- Category: Side Dish
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 1 (15 ounce) can sweet corn, drained
- 1 (15 ounce) can corn, drained
- 1 (10 ounce) package frozen chopped squash, thawed and drained
- 1 cup sour cream
- 1/2 cup shredded cheddar cheese
- 1/4 cup chopped onion
- 1/4 cup butter, melted
- 2 eggs, beaten
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 cup bread crumbs
- 2 tablespoons butter, melted
Instructions
- Preheat oven to 350 degrees F (175 degrees C).
- In a large bowl, combine the drained corn, thawed squash, sour cream, cheddar cheese, chopped onion, melted butter, beaten eggs, salt, and pepper.
- Mix well until all ingredients are evenly distributed.
- Pour the mixture into a greased 9×13 inch baking dish.
- In a small bowl, combine the bread crumbs and the remaining 2 tablespoons of melted butter.
- Sprinkle the buttered bread crumbs evenly over the top of the casserole.
- Bake for 35-45 minutes, or until the casserole is set and the topping is golden brown.
- Let stand for a few minutes before serving.
Notes
- For an extra cheesy casserole, you can add more cheddar cheese.
- You can substitute fresh corn kernels for canned corn if desired.
- If you prefer a spicier casserole, add a pinch of cayenne pepper.
Nutrition
- Serving Size: 1 serving
- Calories: Approximately 250-300 calories per serving (will vary based on exact ingredients and portion size)
- Sugar: Approximately 8-10g per serving
- Sodium: Approximately 400-500mg per serving
- Fat: Approximately 15-20g per serving
- Saturated Fat: Approximately 8-10g per serving
- Unsaturated Fat: Approximately 7-10g per serving
- Trans Fat: 0g
- Carbohydrates: Approximately 20-25g per serving
- Fiber: Approximately 2-3g per serving
- Protein: Approximately 5-7g per serving
- Cholesterol: Approximately 50-60mg per serving

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