Spaghetti Squash Bolognese

Spaghetti squash Bolognese replaces pasta with roasted squash strands and tops them with a rich meat sauce. The squash stays tender and slightly firm when roasted at high heat, and the long strands hold the sauce without getting mushy like overcooked noodles would.

Ingredients for Spaghetti Squash Bolognese

Spaghetti squash becomes the base, with flesh that naturally separates into noodle-like strands when roasted. Ground beef forms the foundation of the sauce and browns to add savory depth. Olive oil helps the squash crisp and flavors the beef. Onion and garlic build the sauce’s aromatic backbone. Tomato paste concentrates tomato flavor and thickens the sauce, while canned crushed tomatoes provide body and acidity. Beef broth keeps the sauce loose and lets it simmer gently. Dried oregano and dried basil are the classic Bolognese seasonings. Salt and black pepper balance the flavors.

Why This Spaghetti Squash Bolognese Works

Roasting the squash at 400°F (200°C) for 35 to 40 minutes dries out the flesh slightly so the strands stay separate instead of clumping together like steamed squash. The high heat also caramelizes the edges, giving the squash a faint sweetness that complements the savory sauce.

The Bolognese sauce simmers low for 25 minutes, which lets the beef soften, the tomato paste darken, and the flavors meld without scorching. Browning the beef first adds color and depth before the liquid goes in, so the finished sauce tastes rich, not watery.

Cooking the squash and sauce on separate timelines means you can reheat either one if needed, and the squash won’t absorb too much sauce and become soggy by the time you eat.

Mistakes To Avoid

Steaming or boiling the squash instead of roasting it makes the flesh waterlogged and the strands stick together in clumps. The squash will taste bland and the sauce will slide off instead of clinging to the strands.

Skipping the step of browning the beef leaves the sauce thin and one-note. The beef should sizzle in the pan and turn dark brown before you add any other ingredients, which takes about 5 minutes.

Adding all the liquid at once and letting it boil hard will make the sauce taste thin and metallic. Simmering gently at a bare bubble lets the flavors concentrate and the beef become tender instead of tough.

Leaving the cooked squash in a warm place or under a heat lamp while you finish the sauce will dry it out and turn the strands stringy and tough. Roast it right before serving, or reheat it gently in the oven at 300°F (150°C) for 5 minutes if it cools.

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Ingredients

• 1 spaghetti squash, about 3 to 4 pounds
• 3 tablespoons olive oil, divided
• 1 pound ground beef
• 1 medium onion, diced small
• 4 cloves garlic, minced
• 3 tablespoons tomato paste
• 1 can (28 ounces) crushed tomatoes
• 1 cup beef broth
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1 teaspoon salt
• 1/2 teaspoon black pepper

Step-by-step Instructions

1. Preheat the oven to 400°F (200°C). Line a large baking sheet with foil.
2. Halve the spaghetti squash lengthwise. Scoop out the seeds with a sturdy spoon and discard them. Brush the cut sides with 1 tablespoon olive oil and sprinkle with a pinch of salt and pepper.
3. Place the squash cut-side down on the prepared baking sheet. Roast for 35 to 40 minutes, until the flesh is tender when pierced with a fork and the edges are light golden brown.
4. While the squash roasts, heat a large heavy-bottomed pot or Dutch oven over medium-high heat. Add 2 tablespoons olive oil, then add the ground beef. Break it into small pieces with a wooden spoon and cook for 5 to 7 minutes, stirring often, until the beef is deep brown and no longer pink. Drain off excess fat if needed.
5. Reduce the heat to medium. Add the diced onion and cook for 3 to 4 minutes, stirring, until the onion is soft and translucent. Add the minced garlic and cook for 1 minute more, stirring, until fragrant.
6. Stir in the tomato paste and cook for 2 minutes, stirring constantly, until it darkens slightly and coats the bottom of the pot.
7. Add the crushed tomatoes, beef broth, oregano, basil, salt, and pepper. Stir well to combine. Bring to a bare simmer over medium-low heat and cook, uncovered, for 25 minutes, stirring occasionally. The sauce should bubble gently at the edges, not boil hard. It will thicken slightly and darken in color.
8. Remove the squash from the oven. Let it cool for 2 to 3 minutes until you can handle it. Using a fork, scrape the flesh from the skin into strands and transfer to a serving bowl or individual plates.
9. Taste the sauce and adjust the salt and pepper if needed. Spoon the Bolognese sauce over the squash strands and serve at once.