Spaghetti Squash Casserole Recipe

Spaghetti Squash Casserole

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One autumn evening, I decided to experiment with this interesting squash, and that’s when the magic happened. I remember my little ones running around the kitchen, giggling and eagerly waiting to see what mom was cooking up. We wanted something warm and cheesy, something that would make the house feel cozy and inviting. The first bite was all it took—our Spaghetti Squash Casserole was an instant hit. The creamy texture, the savory cheese, and the hint of garlic came together beautifully, making it a dish we’ve cherished ever since.

This recipe is perfect for those busy weeknights when you want something wholesome that doesn’t require hours in the kitchen. Plus, it’s versatile enough to serve as a side dish or even a main course if you’re going for a meatless meal. And the best part? It’s incredibly simple to put together and uses ingredients you probably already have in your pantry.

Whether you’re a seasoned cook or someone just starting to dabble in the kitchen, this Spaghetti Squash Casserole is a foolproof dish that will have everyone asking for seconds. So, why not give it a shot? Gather your family around the table and enjoy some quality time over this comforting meal. Trust me; it’ll soon become a cherished tradition in your home, just like it did in ours.

How to Make Spaghetti Squash Casserole

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Ingredients:

  • Olive oil cooking spray
  • 1 (3 pounds) raw spaghetti squash (or 2 1/2 cups (450 grams) cooked spaghetti squash)
  • 1 large egg
  • 1/2 cup sour cream
  • 1 teaspoon Diamond Crystal kosher salt
  • 1/4 teaspoon black pepper
  • 1/2 teaspoon dried thyme
  • 1 tablespoon fresh garlic (minced)
  • 1 cup cheddar cheese (sharp, shredded)

Directions:

  1. Start by preheating your oven to 400°F. Give a 1.5-quart baking dish a light coat of olive oil cooking spray to prevent sticking.
  2. To microwave the squash, pierce it with a sharp knife in a few places. Microwave for 6 minutes, then turn it over and microwave for another 6 minutes until it becomes tender.
  3. Let the squash rest for about 5 minutes post-microwaving. Cut it in half lengthwise and allow to cool slightly before scooping out the seeds and pulp. Use a fork to scrape out the spaghetti-like strands into a bowl.
  4. In a large mixing bowl, whisk the egg gently. Stir in sour cream, kosher salt, black pepper, dried thyme, and minced garlic until you have a smooth mixture.
  5. Combine the prepared spaghetti squash strands and shredded cheddar cheese into the cream mixture. Mix well until fully incorporated.
  6. Transfer the mixed ingredients into your prepared baking dish. Bake it in the oven until the top is golden brown, roughly 40 minutes.
  7. After baking, give it a 10-minute cool down before serving. Cut into squares or scoop directly onto plates and enjoy!

Creamy Spaghetti Squash Casserole

Creative Substitutions to Suit Your Taste

If you find yourself missing an ingredient or two, don’t fret! Feel free to substitute Greek yogurt for sour cream for a slightly tangy twist. If cheddar isn’t your favorite, try mozzarella or a blend of Italian cheeses for a different flavor profile. For a spicy kick, add a pinch of red pepper flakes or switch thyme for Italian seasoning.

Best Ways to Store Leftover Spaghetti Squash Casserole

Store any leftovers in an airtight container in the refrigerator for up to three days. If you want to keep it longer, consider freezing it. When ready to eat, reheat in an oven at 350°F until warmed through. This method helps maintain the casserole’s delightful texture.

Perfect Pairings for Spaghetti Squash Casserole

This casserole pairs perfectly with a crisp green salad drizzled with balsamic vinaigrette or a side of steamed broccoli for added nutrition. For a heartier meal, serve alongside grilled chicken or fish. A glass of white wine like Chardonnay complements the cheesy flavors beautifully.

Pro Tips for the Perfect Spaghetti Squash Casserole

Make sure your squash is cooked just right to avoid excess moisture in the casserole. After microwaving, allow it to cool slightly to release any extra steam. To enhance the casserole’s flavor, try sautéing the minced garlic for a few seconds before adding it to the mix.

How to Make Spaghetti Squash Casserole Fit Any Time of Year

In the summer, consider adding fresh basil or tomatoes from your garden to bring in bright flavors. During the winter months, sprinkle some nutmeg or cinnamon for a hint of warmth. Regardless of the season, this casserole adapts beautifully to whatever produce is freshest.

Serving Spaghetti Squash Casserole

FAQs:

How do I know when the spaghetti squash is done cooking?

You’ll know the spaghetti squash is cooked when it’s tender to the touch and yields easily when pierced with a fork. If using an oven instead of a microwave, bake at 375°F for about 40-50 minutes. Remember to let it cool slightly so it’s easier to handle!

Can I make this recipe vegan?

Absolutely! Substitute the egg with a flax egg (1 tablespoon of flaxseed meal mixed with 2.5 tablespoons of water) and use a vegan sour cream and cheese alternative. These swaps offer a delightful plant-based version without compromising on flavor.

What can I use instead of cheddar cheese?

If cheddar cheese isn’t your cup of tea, try using mozzarella, Gruyère, or a mix of your favorite cheeses. Each will bring a unique flavor to the casserole. You might find a new favorite combination by experimenting with different cheese varieties.

How do I avoid a watery casserole?

To prevent the casserole from becoming watery, ensure that the squash is well-drained. After microwaving, let it rest to release steam, and use a fork to separate the strands gently. Additionally, baking the casserole uncovered helps evaporate any residual moisture.

Can I add meat to this recipe?

Yes, you can certainly add protein to the dish. Cooked and crumbled sausage, ground turkey, or even shredded rotisserie chicken can be mixed into the casserole before baking. These additions make the dish heartier and satisfying as a main course.

Is there a way to spice it up?

To add some heat, consider mixing in chopped jalapeños or a pinch of cayenne pepper. A sprinkle of red pepper flakes over the top before baking can also give it an extra kick. Adjust the spice level to your preference for a uniquely flavorful dish.

Spaghetti Squash Casserole Recipe

Spaghetti Squash Casserole

This delightful spaghetti squash casserole combines the comfort of cheesy goodness with the healthy twist of squash. It's perfect as a hearty side or a satisfying meatless main course.
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 1 hour 5 minutes
Course Side Dish
Cuisine American
Servings 4 servings

Equipment

  • Microwave
  • Oven
  • baking dish
  • mixing bowl

Ingredients
  

  • 1 spray olive oil cooking spray
  • 1 3 pounds raw spaghetti squash or 2 1/2 cups (450 grams) cooked spaghetti squash
  • 1 large egg
  • 1/2 cup sour cream
  • 1 teaspoon Diamond Crystal kosher salt
  • 1/4 teaspoon black pepper
  • 1/2 teaspoon dried thyme
  • 1 tablespoon fresh garlic minced
  • 1 cup cheddar cheese sharp, shredded

Instructions
 

Prepare the Squash:

  • Preheat your oven to 400°F. Lightly coat a 1.5-quart baking dish with the olive oil spray.
  • With a sharp knife, make a few holes in the spaghetti squash and microwave it for 6 minutes. Flip it to the other side and microwave for an additional 6 minutes until it feels soft. Let it rest for 5 minutes to finish up cooking.
  • Once cooled slightly, halve the squash lengthwise and scoop out the seeds. Use a fork to scrape the flesh into strands, and place them into a large bowl. Set this aside.

Combine for the Casserole:

  • In a separate bowl, whisk together the egg, sour cream, kosher salt, pepper, thyme, and minced garlic until smooth.
  • Now add the prepared spaghetti squash and the shredded cheddar cheese into the egg mixture. Stir everything until it is well combined.
  • Transfer this combined mixture into the prepared baking dish and bake for approximately 40 minutes or until the top is golden and bubbly.
  • After removing from the oven, let the casserole rest for 10 minutes. Then, serve by scooping onto plates or cutting into squares.
Keyword Squash

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