Stuffed Spaghetti Squash Recipes: 8 Savory Fillings for Roasted Squash Boats

By Aquarium Guides Editorial Team · Updated November 10, 2026

Last Updated: November 10, 2026

Spaghetti squash roasts into tender golden strands that can be scooped, mixed with a filling and baked again inside the shell. These stuffed spaghetti squash recipes begin with a reliable roasting method, followed by eight fillings, from pizza-style to chicken Alfredo. A medium squash (about 3 pounds) makes two boats and serves two to four people, depending on the filling.

Ingredients

For the base roasted squash (makes 2 boats):

• 1 medium spaghetti squash (about 3 pounds)
• 1 tablespoon olive oil
• 1/2 teaspoon kosher salt
• 1/4 teaspoon black pepper

Instructions

1. Heat the oven to 400°F (200°C). Line a baking sheet with parchment paper.
2. Microwave the whole squash for 2 minutes to soften the skin, then use a sharp, heavy knife to cut it in half lengthwise. Scoop out the seeds and stringy pulp with a spoon.
3. Brush the cut sides with olive oil and season with salt and pepper.
4. Place cut-side down on the baking sheet. Roast for 35 to 45 minutes, until a fork pierces the skin easily and the flesh pulls into strands.
5. Let the squash cool 10 minutes. Use a fork to rake the flesh into strands, keeping the shells intact.
6. Mix the strands with the filling of your choice (below), spoon back into the shells, top, and return to the oven at 400°F for 10 to 15 minutes unless noted.

8 Fillings for Stuffed Spaghetti Squash

1. Pizza-Stuffed

Mix the strands with 1 cup marinara, 1/2 cup mini pepperoni, 1/2 cup diced bell pepper and 1/2 teaspoon Italian seasoning. Top with 1 cup mozzarella and bake until bubbly.

2. Chicken Alfredo

Stir in 2 cups shredded cooked chicken, 3/4 cup Alfredo sauce, 1 cup baby spinach and 1/4 cup Parmesan. Top with more Parmesan and broil 2 minutes.

3. Taco-Style Beef

Brown 1 pound ground beef with 1 tablespoon taco seasoning. Mix with strands, 1/2 cup salsa and 1/2 cup black beans. Top with 1 cup Mexican cheese blend and serve with cilantro and lime.

4. Sausage and Spinach

Sauté 8 ounces Italian sausage with garlic, add 3 cups chopped spinach, and mix with the strands, 1/2 cup ricotta and 1/2 cup Parmesan.

5. Spinach Artichoke

Mix strands with 4 ounces cream cheese, 1/2 cup chopped artichoke hearts, 1 cup spinach, 1/2 cup mozzarella and 1 garlic clove. Top with Parmesan.

6. Buffalo Chicken

Mix strands with 2 cups shredded chicken tossed with 1/3 cup buffalo sauce, 2 ounces cream cheese and 1/2 cup shredded cheddar. Finish with ranch and sliced celery.

7. Mushroom Gruyère

Sauté 8 ounces sliced mushrooms and 1 shallot in butter. Mix with strands, 1 tablespoon thyme and 1 cup shredded Gruyère. Top with extra cheese.

8. Mediterranean

Combine strands with 1/2 cup halved olives, 1/2 cup chopped sun-dried tomatoes, 1/2 cup crumbled feta, 2 tablespoons olive oil and 1 teaspoon oregano. Top with feta; bake 10 minutes.

Tips for Perfect Spaghetti Squash

• Choose a heavy squash. Look for a firm, pale yellow rind without soft spots.
• Cut-side down for roasting. This steams the flesh while the cut surface browns slightly.
• Do not overcook. Overcooked squash turns mushy. Strands should be tender but have a slight bite.
• Drain excess moisture. After raking, press the strands lightly between paper towels. Excess water makes the stuffing runny.
• Rake with a fork. Scrape lengthwise, along the length of the shell, for long strands.
• Season the squash itself. It has a mild flavor and needs salt.

Other Cooking Methods for Squash

For speed, pierce a whole squash several times and microwave 10 to 12 minutes, turning once, then halve and scoop. For a hands-off method, roast a whole pierced squash at 375°F for 60 to 70 minutes. Halved squash can also be cooked cut-side down in a slow cooker with 1/2 cup water on low for 6 to 7 hours.

Variations

Vegetarian Bean Filling

Use white beans or lentils in place of meat for any of the fillings above.

Lower-Carb Dinner Plate

Serve the stuffed squash with a green salad rather than bread or pasta for a lighter plate.

Skip the Shell

Mix the strands and filling in a baking dish and bake as a casserole at 375°F for 20 minutes.

Storage

Plain roasted strands keep in the refrigerator for 4 days and can be frozen for up to 3 months in freezer bags; squeeze out moisture after thawing. Stuffed boats can be assembled a day ahead, covered, and refrigerated. Bake from cold for 20 to 25 minutes. Leftovers keep for 3 days and reheat in a 350°F oven for 15 minutes or in the microwave.

Building Flavor in the Shell

Because the squash itself is mild, the filling carries the flavor. Brown meats and vegetables before they go into the shell so they add savory depth, and season each layer, not just the final mix. A spoonful of tomato paste cooked with the onions, a splash of wine, or a little Dijon mustard adds depth to otherwise simple fillings. Finish with something fresh after baking, such as basil, parsley, lemon zest or a squeeze of lime, to wake up the dish.

Serving and Portions

One half-shell makes a full dinner portion when the filling contains protein, or a side-dish portion when it is vegetable-based. For a crowd, cut each baked half crosswise into two or three pieces to serve smaller portions. A green salad, roasted broccoli or garlic bread works well alongside, depending on the filling.

Working Ahead

1. Roast the squash up to 2 days in advance and refrigerate the shells and strands separately.
2. Cook the filling components the day before.
3. Assemble just before baking to keep the strands from becoming wet.
4. Bake at 400°F for 15 to 20 minutes when starting with chilled components.

FAQ

How do I cut a spaghetti squash safely?

Microwave it briefly to soften the rind, set it on a damp towel to prevent slipping, and use a sharp, sturdy chef’s knife. Cutting through the stem end can help guide the blade.

Can I roast it cut-side up?

Yes. Cut-side up gives more browning and drier strands, and cut-side down gives softer, moister strands. Cut-side up usually needs about 5 more minutes.

Why is my squash watery?

It was probably overcooked or not drained. Roast until just tender and blot the strands before mixing in sauce.

Can I use butternut squash instead?

The stuffed boat method works with acorn or delicata squash, but the texture is soft rather than stranded, so the filling will taste different.

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