Recipe For Spaghetti Squash With Marinara Sauce: Low-Carb Pasta Alternative

Recipe For Spaghetti Squash With Marinara Sauce: Low-Carb Pasta Alternative

This dish offers a low-carb twist on classic pasta night without sacrificing flavor or satisfaction. The natural sweetness of roasted spaghetti squash pairs beautifully with rich, tangy marinara.

Simple to prepare yet impressive, it delivers all the comfort of traditional pasta while keeping carbs in check. The squash strands absorb the sauce just like noodles would.

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Difficulty
Medium
🌿
Diet
Vegetarian
⏱️
Total Time
30 min
🔥
Calories
Low Cal

Ingredients for Recipe for Spaghetti Squash with Marinara Sauce

A low-carb delight with roasted squash and tangy marinara sauce. Simple, fresh, and satisfying.

Ingredient Amount Notes
Spaghetti Squash 🎃 2 whole Medium-sized, about 3-4 lbs each
Olive Oil 🫒 2 tbsp Extra-virgin, divided for roasting and sauce
Salt 🧂 1 tsp Sea salt or kosher salt preferred
Black Pepper 🌶️ ½ tsp Freshly ground for best flavor
Garlic Cloves 🧄 4 cloves Minced for marinara sauce
Canned Crushed Tomatoes 🍅 28 oz San Marzano preferred for richness
Tomato Paste 🍅 2 tbsp For depth of flavor in sauce
Dried Oregano 🌿 1 tsp Mediterranean variety for authenticity
Dried Basil 🍃 1 tsp Or substitute 1 tbsp fresh basil
Red Pepper Flakes 🌶️ ¼ tsp Optional, for heat adjustment
Onion 🧅 1 whole Medium, finely diced for sauce
Fresh Basil Leaves 🌿 ¼ cup Chopped, for garnish
Nutritional Yeast 🧀 2 tbsp For cheesy flavor, optional

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Spaghetti squash is the star here. Look for firm, heavy squash with smooth, unblemished skin at your local Whole Foods or farmers market. The San Marzano tomatoes for the marinara are worth the splurge—Trader Joe’s carries them at a good price. For the olive oil, use a high-quality extra-virgin; it makes a noticeable difference in the sauce’s richness.

No fresh basil? Dried basil at one-third the amount works fine. Out of garlic? Garlic powder at half the quantity (1 tsp) is a decent substitute. If you don’t have tomato paste, reduce the crushed tomatoes by 2 tbsp and simmer longer for concentration. For a sweeter sauce, add a pinch of coconut sugar (the squash’s natural sweetness pairs well).

Roasted squash keeps 4-5 days in the fridge. The marinara freezes beautifully for up to 3 months in airtight containers. For best texture, reheat the squash strands gently in a skillet with a splash of water.

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Why You’ll Love This Recipe

  • Hands-Off Cooking: I roast the squash while I prep everything else—no babysitting required.
  • Garlic-Kissed Goodness: The roasted garlic cloves mixed with marinara make every bite ridiculously flavorful.
  • Meal Prep Hero: I make a big batch on Sunday and it reheats beautifully for lunches all week.
  • Budget Stretcher: One spaghetti squash feeds my family of four for less than a takeout meal.

Instructions

This method ensures perfectly tender strands and a rich, aromatic marinara every time.

Step 1: Prepare and Roast the Spaghetti Squash

Preheat your oven to 400°F. Carefully halve the 2 whole Spaghetti Squash lengthwise and scoop out the seeds with a spoon. Brush the cut sides with 1 tbsp Olive Oil and sprinkle with ½ tsp Salt and 0.5 tsp Black Pepper.

Place the squash cut-side down on a baking sheet lined with parchment paper. Roast for 35-45 minutes until the flesh is fork-tender and the edges are golden brown. The skin should give slightly when pressed, and the strands should easily separate when scraped with a fork.

Step 2: Sauté the Aromatics for the Marinara

While the squash roasts, heat the remaining 1 tbsp Olive Oil in a saucepan over medium heat. Add the finely diced 1 whole Onion and cook for 5 minutes until translucent and soft. Stir occasionally to prevent browning.

Add the 4 cloves Garlic Cloves (minced) and cook for 1 minute until fragrant. Immediately stir in the 2 tbsp Tomato Paste, 1 tsp Dried Oregano, 1 tsp Dried Basil, and 0.25 tsp Red Pepper Flakes to bloom the spices in the oil.

Step 3: Simmer the Marinara Sauce

Pour in the 28 oz Canned Crushed Tomatoes and stir to combine. Reduce the heat to low and let the sauce simmer uncovered for 15-20 minutes, stirring occasionally. The sauce is ready when it thickens slightly and deepens in color.

Taste and adjust seasoning with the remaining ½ tsp Salt if needed. For a smoother texture, use an immersion blender to lightly purée the sauce, but leave some texture for rustic appeal.

Step 4: Combine and Serve

Use a fork to scrape the roasted Spaghetti Squash into long strands, creating a bed on each plate. Ladle the warm marinara sauce over the top, ensuring each serving is generously coated.

Garnish with the 0.25 cup Fresh Basil Leaves (chopped) and sprinkle with 2 tbsp Nutritional Yeast for a cheesy, umami finish. Serve immediately while the squash is hot and the sauce is fragrant.

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Pro Tips For Making Recipe For Spaghetti Squash With Marinara Sauce

  • Roast Cut-Side Down: Place the squash halves cut-side down on the baking sheet—this traps steam to soften the flesh evenly while the outer skin caramelizes. I learned this the hard way after serving undercooked strands too many times.
  • Salt the Squash First: Sprinkle the cut sides with salt and let it sit for 10 minutes before roasting. Sounds weird, but it works: it draws out excess moisture so your marinara doesn’t turn watery.
  • Skip the Overcrowding: Give each squash half its own space on the pan—crowding them steams instead of roasts, leaving you with mushy, flavorless strands. Resist the urge to save a tray.
  • Mince Garlic Fine: For the marinara, mince the garlic as fine as you can—about 1/8 inch pieces. Larger chunks burn easily in the sauce and leave bitter bites. My grandmother swore by this, and she was right.

Perfect Pairings for These Flavors

Side Dishes

Enhance your spaghetti squash with marinara sauce with light, fresh sides. A crisp Caprese salad with tomatoes, mozzarella, and basil complements the dish beautifully. For a heartier option, try roasted garlic bread or a simple spinach and arugula salad with a balsamic vinaigrette to balance the flavors.

Drink Pairings

Pair this dish with a refreshing drink to complete the meal. A glass of Chianti or Pinot Noir adds depth to the marinara, while a sparkling lemonade or iced tea offers a lighter, non-alcoholic option. For a cozy touch, a warm herbal tea like rosemary or basil can be delightful.

Complementary Flavors

Boost the taste with complementary flavors. Sprinkle Parmesan cheese or red pepper flakes for extra depth. Fresh herbs like basil or oregano can brighten the dish, while a drizzle of olive oil adds richness. These small touches elevate the meal without overpowering it.

Nutrition Facts

Servings 4
Amount Per Serving
Calories 180kcal
% Daily Value
Total Fat 8g10%
Saturated Fat 1g5%
Cholesterol 0mg0%
Sodium 680mg30%
Total Carbohydrate 28g10%
Dietary Fiber 6g21%
Sugars 10g
Protein 4g8%
Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
★★★★★4.9(11 reviews)
Chef Melanie

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