Roasted Spaghetti Squash with Savory Marinara Sauce

I have to admit to a “Worst Cooks In America” moment. I recently made an absolutely atrocious dish. But this post isn’t about that failure—it’s about a successful and simple recipe: Roasted Spaghetti Squash with Marinara.

a whole spaghetti squash on a cutting board.

My culinary mishap began after buying a huge bunch of rainbow chard at the market. I sautéed the greens and stems in a little olive oil with garlic, red pepper flakes, and a squeeze of lemon. It was mild, slightly earthy with a faint sweetness—almost beet-like—and excellent alongside turkey breast and a spicy curried cauliflower.

Scooping the seeds from the squash.

Remembering how much I liked the chard and curried cauliflower, I wondered how they’d taste together in a soup. I blended the leftovers with chicken stock, warmed it, and served myself a bowl for lunch. The texture was smooth and creamy, and the curry provided heat, but the deep forest green color made me think of pond scum. I finished the bowl out of practicality, but it was a meal I won’t repeat.

Roasting spaghetti squash, cut side down on a baking sheet.

Fortunately, the roasted spaghetti squash paired with marinara is the opposite of that disaster. It’s easy, flavorful, and perfect for busy weeknights. The squash is light but filling, and when topped with marinara and a sprinkle of Parmesan, it satisfies cravings for pasta without the heaviness of traditional noodles. It’s also a great low-carb and gluten-free alternative for anyone watching carbs or avoiding gluten.

The roasted squash is tender.

This dish is simple enough that it hardly feels like following a recipe—more like setting yourself up to relax with a glass of wine while dinner cooks. It makes a lovely side for chicken or pork, and if you want to make it a heartier meal, serve it with healthy chicken meatballs.

Scraping the strands of spaghetti squash using a fork.

If you make large batches of marinara and freeze portions, this recipe comes together even faster. Any good spaghetti sauce works well—homemade or store-bought.

A bowl of spaghetti squash with fresh thyme.

Like some healthy meatballs with your spaghetti squash? Try serving with chicken meatballs for extra protein and comfort.

Serving a plate of spaghetti squash with marinara.

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Roasted Spaghetti Squash with Marinara

Low-carb spaghetti—yes please. Spaghetti squash is light, satisfying, and pairs beautifully with your favorite marinara sauce.
Author: Lisa Lotts
Course Main Course
Cuisine American
Keyword spaghetti squash, tomato sauce
Dietary Restrictions Dairy-Free, Egg Free, Gluten-Free, keto, Low-Carb, Vegan
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings 4

INGREDIENTS:

US Customary – Metric
  • 1 3-4 pound spaghetti squash
  • 2-3 tablespoons olive oil
  • salt & pepper to taste
  • 3 cups marinara sauce

DIRECTIONS:

  • Preheat oven to 375℉. Cover a sheet pan with parchment paper and set aside.
  • Using a very sharp knife, slice the spaghetti squash in half lengthwise. Scoop out the seeds and any excess fibers with a spoon.
  • Rub the flesh of each half with olive oil and season with salt and pepper.
  • Place the squash halves flesh-side down on the baking sheet.
  • Roast for about 45 minutes, until the skin puckers and the flesh is tender.
  • Remove from the oven and let cool until you can handle the squash. Use a fork to rake through the flesh and separate it into strands.
  • Transfer the strands to a serving dish and top with marinara sauce and a sprinkle of Parmesan, if desired. Serve immediately.

NOTES:

I make large batches of marinara and freeze portions so it’s always ready. Any good spaghetti sauce will work.

NUTRITION:

Calories: 243kcal | Carbohydrates: 42g | Protein: 5g | Fat: 8g | Fiber: 9g

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Need a gluten free, low carb spaghetti alternative? This easy recipe for Roasted Spaghetti Squash with Marinara is THE BEST!