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Cheesy Spaghetti Squash Au Gratin: An Unforgivable Dish

Okay, let’s talk Spaghetti Squash Au Gratin! I know, I know, squash can sound…blah. But trust me on this one. This isn’t your grandma’s steamed-into-oblivion squash. This is a creamy, cheesy DREAM. I originally stumbled upon this recipe when I was trying to cut back on carbs but still craving something super comforting. See, I’m a sucker for anything au gratin, but potatoes all the time? Nope. So, I experimented, and wowza! Now, even my pickiest eaters (ahem, my husband) ask for this. It’s even made it into our regular Thanksgiving rotation, beating out some serious contenders. I’m telling ya, this stuff is good!

Close-up of a cheesy Spaghetti Squash Au Gratin casserole in a white baking dish.

Why You’ll Love This Spaghetti Squash Au Gratin

Seriously, where do I even start? This Spaghetti Squash Au Gratin is gonna be your new favorite thing because:

  • It’s ridiculously easy to make. Like, minimal effort for maximum reward!
  • Helloooo, cheesy goodness! We’re talking layers of creamy, melty cheese.
  • It’s vegetarian, baby! Perfect for meatless Mondays (or any day, really).
  • Want au gratin without the guilt? This uses spaghetti squash instead of potatoes, so it’s a bit lighter.

Ingredients for Spaghetti Squash Au Gratin

Alright, gather ’round! Here’s what you’ll need to make this magical Spaghetti Squash Au Gratin happen. This isn’t fussy cooking, promise! You’ll need: 1 spaghetti squash, halved and seeded (the star!), 2 tablespoons olive oil, 1 teaspoon salt, ½ teaspoon black pepper, 1 cup heavy cream (don’t skimp!), ½ cup grated Parmesan cheese, and ¼ cup grated Gruyere cheese. See? Simple!

Close-up of a cheesy Spaghetti Squash Au Gratin casserole in a baking dish, with a portion removed.

How to Prepare Spaghetti Squash Au Gratin: Step-by-Step Instructions

Okay, people, let’s get cooking! This Spaghetti Squash Au Gratin recipe is seriously easy, but I’m gonna walk you through it step-by-step so there’s no guesswork. Don’t worry, I’ve made all the mistakes so you don’t have to!

  1. First things first, **preheat your oven to 400°F (200°C)**. Seriously, don’t skip this step! You want that oven nice and hot.
  2. Now, grab your spaghetti squash, halve it, and scoop out those seeds. I use a spoon, but a grapefruit spoon works *amazingly* well. Spread those halves cut-side up on a baking sheet.
  3. Drizzle those squash halves with **2 tablespoons of olive oil**, and then sprinkle with **1 teaspoon of salt and ½ teaspoon of black pepper**. Get in there and make sure they’re evenly coated!
  4. **Bake for 45-60 minutes**. Seriously, the time will vary based on your squash. You’ll know it’s ready when you can easily pierce the skin with a fork. If it’s still hard, give it a few more minutes!
  5. Careful, they’re HOT! Let the squash cool for a few minutes. I know, patience is hard, but trust me on this one. Once they’re cool enough to handle, use a fork to shred the squash into, well, spaghetti-like strands. This is my favorite part!
  6. Okay, now for the good stuff. In a bowl, combine the shredded spaghetti squash with **1 cup of heavy cream, ½ cup of grated Parmesan cheese, and ¼ cup of grated Gruyere cheese**. Mix it all up until it’s nicely combined.
  7. Pour this cheesy squash mixture into a baking dish. I usually use an 8×8 inch dish, but anything similar will work.
  8. Pop that dish back into the oven and **bake for 20-25 minutes**, or until it’s golden brown and bubbly. Ooooh, yeah!
  9. Again, with the patience! Let the au gratin stand for 5-10 minutes before serving. This helps it set up a bit so it’s easier to serve. Plus, it’s still plenty hot!

And that’s it! Seriously, wasn’t that easy? You’ve now got a killer Spaghetti Squash Au Gratin that everyone will rave about. Enjoy!

Close-up of a freshly baked Spaghetti Squash Au Gratin in a white baking dish, golden brown and bubbly.

Tips for the Best Spaghetti Squash Au Gratin

Want to take your Spaghetti Squash Au Gratin from “yum” to “OMG!”? Here are a few tricks I’ve learned along the way.

  • **Pick the right squash!** You want a squash that feels heavy for its size and doesn’t have any soft spots.
  • **Cheese, please!** Don’t be afraid to experiment with different cheeses. Fontina or even a little bit of goat cheese can add a fun twist. Just make sure they melt well!
  • **Watch that baking time!** Ovens can be sneaky. Keep an eye on your au gratin towards the end of the baking time. You want it golden brown, not burnt! I usually check it around 18 minutes just to be safe.

Variations on Spaghetti Squash Au Gratin

Okay, so you’ve mastered the basic Spaghetti Squash Au Gratin, right? Now let’s get a little crazy! The beauty of this recipe is that it’s super easy to customize. Don’t be afraid to play around and make it your own! I’ve tried a few variations of my own, and trust me, some have been…interesting. But these are tried-and-true winners!

  • **Cheese it up!** Cheddar or mozzarella are fantastic substitutes if you don’t have Parmesan or Gruyere on hand. A smoked gouda? Oh yeah, that’s amazing!
  • **Veggies galore!** Wilted spinach or sautéed mushrooms (like in this Spinach & Mushroom Ricotta Stuffed Zucchini recipe) would be delicious additions. Just stir them in with the squash and cheese mixture.
  • **Spice things up!** A pinch of nutmeg or a dash of garlic powder can add a warm, cozy flavor. I even tried a little cayenne pepper once for a kick – not bad!

Seriously, the possibilities are endless! Just use your imagination (and maybe my tips!) and create your signature Spaghetti Squash Au Gratin.

Serving Suggestions for Spaghetti Squash Au Gratin

So, you’ve got this amazing Spaghetti Squash Au Gratin…now what? Well, it’s pretty fabulous on its own, but if you’re looking to make a meal of it, I’ve got some ideas! Some garlic roasted vegetables would be amazing. Or how about these roasted cabbage wedges with spicy feta dip? A simple salad also adds freshness that cuts through the richness perfectly. Honestly, anything goes!

A slice of cheesy Spaghetti Squash Au Gratin on a plate, with the baking dish in the background.

FAQ About Making Spaghetti Squash Au Gratin

Got questions? I got answers! I’ve been making this Spaghetti Squash Au Gratin for ages, and I’ve heard it all. So, before you even ask, here are some of the most common questions I get:

Can I use frozen spaghetti squash?

Okay, so this is a tricky one. Technically, yes, you *can* use frozen spaghetti squash. BUT, it’s going to be a lot wetter than fresh. Make sure you squeeze out as much excess water as possible before mixing it with the other ingredients. Otherwise, your au gratin might be a little soggy. Fresh is always best, trust me!

What other cheeses work well in this recipe?

Oh, the cheese possibilities are endless! Gruyere and Parmesan are my go-to’s, but fontina, asiago, or even a little bit of sharp cheddar would be delicious. Just avoid cheeses that don’t melt well, like feta or cotija. And don’t be afraid to experiment! That’s half the fun!

How long does Spaghetti Squash Au Gratin last?

This is the saddest question because it means you have leftovers, haha! But seriously, if you do have leftovers, store them in an airtight container in the fridge. It’ll keep for about 3-4 days. To reheat, just pop it in the microwave or bake it in the oven until heated through. It might not be *quite* as good as the day it was made, but it’s still pretty darn tasty!

Estimated Nutritional Information for Spaghetti Squash Au Gratin

Okay, so you’re curious about the nutritional info, huh? Here’s a quick rundown, but keep in mind these are just estimates! Each serving clocks in around 320 calories, 25g fat, 10g protein, and 15g carbs. Not too shabby, right?

Rate This Spaghetti Squash Au Gratin Recipe!

So, did you love it? I hope so! Don’t forget to leave a comment below and let me know what you think. Rate the recipe, and share it with your friends on social media! Happy cooking!

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A spoonful of cheesy Spaghetti Squash Au Gratin is lifted from a baking dish, with melted cheese dripping down.

Spaghetti Squash Au Gratin


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  • Author: Elisa
  • Total Time: 75 min
  • Yield: 4 servings 1x
  • Diet: Vegetarian

Description

A baked casserole with spaghetti squash and cheese.


Ingredients

Scale
  • 1 spaghetti squash, halved and seeded
  • 2 tablespoons olive oil
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 cup heavy cream
  • 1/2 cup grated Parmesan cheese
  • 1/4 cup grated Gruyere cheese

Instructions

  1. Preheat oven to 400°F (200°C).
  2. Place squash halves cut-side up on a baking sheet. Drizzle with olive oil, salt, and pepper.
  3. Bake for 45-60 minutes, or until squash is tender.
  4. Let cool slightly, then shred the squash with a fork.
  5. In a bowl, combine shredded squash, heavy cream, Parmesan cheese, and Gruyere cheese.
  6. Pour mixture into a baking dish.
  7. Bake for 20-25 minutes, or until golden brown and bubbly.
  8. Let stand for 5-10 minutes before serving.

Notes

  • You can add other cheeses, such as cheddar or mozzarella.
  • For a richer flavor, use whole milk instead of heavy cream.
  • Prep Time: 10 min
  • Cook Time: 65 min
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 320
  • Sugar: 6g
  • Sodium: 500mg
  • Fat: 25g
  • Saturated Fat: 15g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 15g
  • Fiber: 5g
  • Protein: 10g
  • Cholesterol: 80mg

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