Intro
Light, comforting, and vibrant, spaghetti squash with marinara is a satisfying low-carb alternative to traditional pasta that doesn’t skimp on flavor. This dish pairs tender, strand-like squash “noodles” with a garlicky, herb-scented marinara for an easy weeknight meal or elegant dinner. Below you’ll find a simple recipe, ingredient list, clear instructions, and detailed nutritional information—especially the carbohydrate, fiber, sugar alcohol, and net-carb breakdown so you can fit this into a keto or low-carb plan.

Why this recipe works

• Naturally lower in carbs than wheat pasta but with a similar texture when roasted or steamed.
• Marinara adds bright tomato flavor and savory depth without heavy calories.
• Flexible: easily made vegetarian, or bulked up with ground meat or sausage for extra protein and fat (useful on keto).
• Fast to assemble and easy to scale.

Ingredients (serves 4)

• 1 medium spaghetti squash (yields about 3.5–4 cups cooked strands)
• 1 1/2 cups marinara sauce (choose a no-sugar-added marinara if you want lower carbs)
• 2 tablespoons extra-virgin olive oil
• 2 cloves garlic, minced
• 1/4 teaspoon red pepper flakes (optional)
• 2 tablespoons grated Parmesan (optional)
• Fresh basil leaves for garnish
• Salt and freshly ground black pepper, to taste

Quick instructions

1. Preheat oven to 400°F (200°C). Slice the squash lengthwise, scoop out seeds, drizzle cut sides with 1 tbsp olive oil, and season with salt and pepper.
2. Roast cut-side down on a baking sheet for 30–40 minutes, until tender and strands easily separate with a fork.
3. Meanwhile, warm 1 tbsp olive oil in a skillet over medium heat. Add garlic and red pepper flakes; sauté 30 seconds. Add marinara and simmer 5–8 minutes to meld flavors.
4. Use a fork to shred the roasted squash into strands. Toss squash strands with the warm marinara in the skillet or pour sauce over servings. Top with Parmesan and basil. Serve hot.

Estimated Nutrition (per serving) — recipe yields 4 servings
Note: These are estimated values based on common ingredient databases and a standard medium spaghetti squash. If you use a different squash size, store-bought marinara with added sugar, or add meat/cheese, nutrition will change. Values rounded.

• Calories: ~160 kcal
• Total Carbohydrates: ~14.8 g
• Dietary Fiber: ~3.3 g
• Sugar Alcohols: 0 g (unless you add a sweetener containing sugar alcohols)
• Net Carbs (Total carbs − Fiber − Sugar alcohols): ~11.4 g
• Sugars (natural and added): ~5–7 g
• Protein: ~5.6 g
• Fat: ~9.9 g

How these numbers were estimated (brief)

• Cooked spaghetti squash: ~4 cups total (≈10 g carbs, ~2.2 g fiber per cup).
• Marinara: 1.5 cups (~12 g carbs and ~3 g fiber per cup, times 1.5).
• Olive oil and Parmesan contribute minimal carbs.
• Sugar alcohols are zero for standard recipes; use of sweetened sauces or sugar substitutes would add them.

Keto & low-carb notes and easy swaps

• This dish runs about 11–12 g net carbs per serving as written—often acceptable on moderate low-carb plans and can fit into a daily keto allowance if you plan other meals accordingly.
• To lower net carbs further:
  • Use a no-sugar-added or “keto” marinara (can drop 2–4 g net carbs per serving).
  • Reduce the amount of marinara per serving; use 2–3 tablespoons per portion rather than 1/3–1/2 cup.
  • Add a fatty protein (ground beef, Italian sausage, or shredded chicken cooked into the sauce) to increase calories from fat and protein while keeping carbs similar—this helps the plate feel more satiating on keto.
  • For very strict keto, consider substituting some or all squash with spiralized zucchini (much lower in carbs).

Tips, storage, and serving ideas

• Roast squash cut-side down for caramelized edges and better strand texture. Microwave or pressure-cook if short on time.
• Keep sauce separate until serving if you plan leftovers—squash can become softer when sauced and stored.
• Refrigerate leftovers up to 3–4 days; reheat gently in a skillet.
• Serve with a sprinkle of fresh basil, extra Parmesan, and a drizzle of olive oil. Pair with a green salad or roasted vegetables.

Final thoughts
Spaghetti squash with marinara is an approachable, flavorful dish that gives you the comfort of a pasta dinner with fewer carbs and more vegetables. Whether you’re maintaining a keto or low-carb lifestyle or simply trying to eat more vegetables, this recipe is a versatile base—customize the sauce, proteins, and cheeses to suit your dietary goals. Enjoy the bright tomato flavors and the satisfying bite of roasted squash every time you make it.

If you’d like, I can provide:

• A printable recipe card with exact quantities adjusted for 2 or 6 servings, or
• A keto-optimized version with nutrition recalculated (meat-based, low-sugar marinara, and higher fat) — tell me your preferred serving size and protein choice.