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Cheesy Garlic Parmesan Spinach Spaghetti Squash: Cozy & Flavorful Dinner

Cheesy Garlic Parmesan Spinach Spaghetti Squash: Cozy & Flavorful Dinner

So Here’s the Story: My Cheesy Garlic Parmesan Spinach Spaghetti Squash Journey

Let me paint you a quick picture: it’s one of those chilly nights when you’re wrapped in a baggy sweater that’s probably seen better days, the kids are circling like hungry jackals, and I’m standing in my kitchen, holding a Spaghetti Squash and wondering (again) if this was really the easiest dinner idea. The first time I made this Cheesy Garlic Parmesan Spinach Spaghetti Squash was after I saw one of those viral food videos and thought, surely it can’t be that simple. Spoiler alert—it’s not always simple (don’t even ask about the time I tried to microwave the whole squash and nearly set off the smoke detector…). But, when you get it right? Oh, it’s dreamy. Comfort food that somehow feels alittle virtuous because, hey, there’s spinach. Even my stubborn Uncle Joe, who claims he’s allergic to anything green, has second helpings. Or maybe he’s just being polite… either way, I count it as a win.

Why My Family Hounds Me for This Every Time

I make this whenever someone texts me the dreaded “what’s for dinner?” and I want something hearty, cheesy, and slightly less beige than mac and cheese (though let’s be honest, nothing ever truly beats mac and cheese). My kids cheer when they see spaghetti squash come out; my youngest calls it “noodle boat.” Plus, when I don’t feel like explaining carbs to my carb-obsessed cousin for the millionth time, this is my stealthy trick. Also, there was that one night when I totally spaced and forgot to defrost protein, so—yep—Cheesy Garlic Parmesan Spinach Spaghetti Squash saved the evening. Now it’s our plan B, C, or frankly, plan A more often than not.

Here’s What You’ll Need (And What You Can Swap)

  • 1 medium spaghetti squash (or grab two little ones—it cooks faster, oddly enough)
  • 2-3 big handfuls fresh baby spinach (frozen works if you’re desperate; I just squeeze out the water first or it gets weirdly slimy)
  • 3-4 cloves garlic, minced (my grandma said only fresh, but I’ve used jarred in a pinch, don’t judge me)
  • 1 cup shredded mozzarella (sometimes I do half mozzarella, half fontina, if there’s a sale—why not?)
  • ½ cup grated parmesan (I like to use “real” Parmigiano-Reggiano, but honestly, the stuff in the green can will do)
  • 2 tablespoons olive oil or a knob of butter if you’re feeling indulgent
  • Salt and black pepper, to taste
  • A sprinkle of red pepper flakes—optional, but I practically throw them on everything
  • Optional: a squeeze of lemon, or a dash of Italian herbs (probably not both, but I won’t tell)

How I Actually Make It (With a Few Bumps Along the Way)

  1. First things first, hack your spaghetti squash in half lengthwise. (Pro tip: If it feels like trying to cut through a bowling ball, microwave the whole squash for 4-5 minutes; it softens up enough that you won’t lose a finger.)
  2. Scoop out the seeds and stringy bits. Set the squash halves cut side up on a baking tray. Drizzle with olive oil and sprinkle with salt and pepper; don’t be shy.
  3. Roast at 400°F (about 200°C) for anywhere from 35 to 45 minutes. You want a fork to glide in easy, but not turn to total mush. Sometimes I check at 30 minutes (sometimes I totally forget and end up with squash paste—which, on second thought, is not the worst, but it’s not ideal).
  4. While that’s going, grab a skillet. Splash in your olive oil or butter, toss in the minced garlic, and let it get fragrant, not burnt (if you burn it, just start over—trust me, I’ve tried hiding it…you can always taste it).
  5. Throw in the spinach. I do this handful by handful; it wilts like crazy, so keep adding more, it disappears faster than socks in the dryer. Season with a pinch of salt.
  6. When the squash is cool enough, grab a fork and rake those glorious strands into a big bowl (or honestly, right in the squash shell if you’re in a hurry or want less cleanup). It’ll look a little odd right now. Just embrace it.
  7. Mix in your spinach and garlic, toss well (this is where I sneak a little taste, for, uh, “quality control”).
  8. Add the cheeses. Stir while it’s still hot—the heat helps everything melt better but don’t be alarmed if there are cheese blobs. Cheese blobs are perfection, actually.
  9. Squeeze that optional lemon if you want a bit of brightness, or sprinkle with some Italian herbs and red pepper flakes.
  10. Scoop the mixture back into the squash shells—fancy, right? Scatter with extra parmesan.
  11. Pop them back in the oven for about 10 minutes, until bubbly and golden (sometimes I broil it for an extra minute but watch it like a hawk, or things get wild fast).
  12. Let it cool a few minutes so you don’t burn your mouth off (not that I’ve ever been that impatient… ahem) and dig in.

Notes: Stuff I’ve Learned the Hard Way

  • If you ever forget to squeeze the water from frozen spinach, you’ll end up with soup. Just saying. Probably still edible, though!
  • Overcooking the squash is a thing. If it collapses when you try to fill it, just pile everything in a casserole dish. Totally fine. Actually, sometimes I do this on purpose.
  • Leftovers are surprisingly good cold, but I like them better the next morning, slightly reheated. Not sure why.

Variations: Stuff I’ve Tried (and, er, Stuff I Shouldn’t Have)

  • I’ve swapped the spinach for kale; takes a bit longer to cook down, but pretty good if you’re into the whole superfood thing.
  • Added leftover rotisserie chicken, which makes it a whole meal (unless you’re vegetarian, then just ignore this bit).
  • I tried throwing in sundried tomatoes once and… actually, not my favorite, but you might like it?
  • Mushrooms are fun, but make sure to cook off the water or it’s kind of a swamp.

Equipment (or What I Improvise With)

  • Baking sheet or roasting tray (I’ve used a casserole dish in a pinch, works fine!)
  • Sharp knife (though I once made do with a bread knife, not ideal, but hey, it got the job done)
  • Big fork for shredding (I’ve even used chopsticks, not recommended unless you’re feeling like a challenge)
  • Large bowl, or just the squash shells for the mix
  • Cheese grater (honestly, pre-shredded isn’t a crime in my book)
Cheesy Garlic Parmesan Spinach Spaghetti Squash

How I Store It (which usually isn’t for long)

If, miracle of miracles, there are leftovers, toss them in an airtight container in the fridge. Lasts about 2-3 days, but honestly, in my house it never makes it past breakfast the next day… probably because I keep “tasting” it every time I open the fridge. If you need reheating tips, these are handy.

Serving: In a Shell or Family Style

We serve it straight from the squash for that “wow” moment, but sometimes I just throw it on a platter with extra parmesan and maybe a drizzle of chili oil (for the spicy ones among us). My sister just eats it cold, standing at the counter—do what speaks to your soul. Goes great with roasted chicken or a big salad, if you’re feeling ambitious. If you want to learn the art of a proper big salad, Smitten Kitchen knows what’s up.

Lessons From a Cook Who is Sometimes Impatient

  • Wait until the squash is cool enough to handle, honestly; I once tried rushing and spent most of dinner with ice on my fingertips. Worth the wait.
  • Mix the cheese in while the squash is still warm but not scalding, or you’ll just get a stringy mess that doesn’t want to cooperate.
  • If you don’t drain the spinach well, it gets weird. I keep saying I’ll remember this and, well, sometimes I don’t.

People Ask Me Stuff Like This All the Time:

  • Can I make this ahead? Yep! Actually, I think it tastes even better the next day, probably because the flavors hang out longer. Just keep the cheese topping off until you’re reheating, if you can.
  • How do you make spaghetti squash less watery? I let the cooked strands sit in a colander for a couple minutes. Sometimes I pat ‘em dry. But some water is pretty normal, don’t stress.
  • Can I freeze it? Tried it once—came out kinda soggy, so I wouldn’t.
  • What’s the best way to cut this dang squash? Microwave it for a few minutes before and use the biggest knife you’ve got. Or ask someone with muscles nearby. I’ve even dropped it on the floor (by accident!) to start a crack…
  • What about using cheddar? It’s not traditional, but actually, I’ve mixed it in and my kids didn’t even notice. Smoked gouda is… not my thing here, though.

Alright, that’s the long (and scatterbrained) story of my Cheesy Garlic Parmesan Spinach Spaghetti Squash. Hope your kitchen smells amazing, and if you find a way to make it even better, seriously, send me a note. Or leave a comment, I actually read those. Until next time, happy cooking and don’t forget to high five your future self for getting dinner on the table.

PS: If you want more veggie-forward inspiration, my current obsession is this vegan broccoli salad from Minimalist Baker—I still put cheese on mine, but you do you!

★★★★★ 4.70 from 29 ratings

Cheesy Garlic Parmesan Spinach Spaghetti Squash

yield: 4 servings
prep: 20 mins
cook: 45 mins
total: 50 mins
A delicious and healthy vegetarian dinner featuring baked spaghetti squash, sautéed spinach, and a cheesy garlic parmesan sauce, all baked until perfectly golden and bubbly.
Cheesy Garlic Parmesan Spinach Spaghetti Squash

Ingredients

  • 1 large spaghetti squash
  • 2 tablespoons olive oil
  • 3 cloves garlic, minced
  • 4 cups fresh spinach
  • 1 cup shredded mozzarella cheese
  • ½ cup grated parmesan cheese
  • ¼ teaspoon crushed red pepper flakes
  • Salt and black pepper to taste

Instructions

  1. 1
    Preheat oven to 400°F (200°C). Cut the spaghetti squash in half lengthwise and scoop out the seeds.
  2. 2
    Brush the cut sides of the squash with 1 tablespoon olive oil and season with salt and pepper. Place face down on a baking sheet and roast for 35-40 minutes, until tender.
  3. 3
    While the squash bakes, heat remaining olive oil in a skillet over medium heat. Add minced garlic and sauté until fragrant, about 1 minute. Add the spinach and cook until wilted, about 2-3 minutes.
  4. 4
    Once the squash is roasted, use a fork to scrape the flesh into strands. Transfer to a large bowl. Stir in the sautéed spinach, half of the mozzarella cheese, half the parmesan, and red pepper flakes. Mix to combine.
  5. 5
    Divide the mixture back into the squash shells. Top with remaining mozzarella and parmesan. Return to the oven and bake for 10 minutes, or until cheese is melted and bubbly.
  6. 6
    Remove from oven, let cool for a few minutes, then serve warm.
CLICK FOR NUTRITION INFO

Approximate Information for One Serving

Serving Size: 1 serving
Calories: 260cal
Protein: 13 gg
Fat: 14 gg
Saturated Fat: 0g
Trans Fat: 0g
Cholesterol: 0mg
Sodium: 0mg
Potassium: 0mg
Total Carbs: 20 gg
Fiber: 0g
Sugar: 0g
Net Carbs: 0g
Vitamin A: 0
Vitamin C: 0mg
Calcium: 0mg
Iron: 0mg

Nutrition Disclaimers

Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.

Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.

To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.

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