These spaghetti squash boats are roasted squash halves filled with a ground turkey tomato sauce, ricotta, and Parmesan — baked until the cheese browns on top. The squash acts as both the vessel and the starch replacement, so there’s no pasta to cook separately. It’s a genuinely filling weeknight dinner that also refrigerates well, making it worth cooking in bulk.
Before you start
The two things that determine whether this dish works are squash doneness and sauce consistency. Roast the squash cut-side down — direct contact with the hot pan steams the flesh from inside and produces strands that hold their shape instead of turning to mush. Check it at 30 minutes by flipping one half and dragging a fork across the flesh; if it pulls into clean strands without resistance, it’s done. If it’s still firm and watery, give it another 5–8 minutes. On the sauce side, let it simmer uncovered for the last few minutes if it looks thin — a watery sauce will pool in the cavity and make the squash soggy. Ground turkey must reach an internal temperature of 165°F (74°C); use a thermometer rather than guessing by color, since lean turkey can look cooked before it actually is.
Ingredient notes
- Spaghetti squash size: Medium squash (roughly 2–2.5 lbs each) give the best strand-to-wall ratio. Very large ones can be watery and take significantly longer to roast.
- Tomato sauce: The recipe calls for a jarred Neapolitan or pasta sauce. A plain marinara works fine. Avoid anything labeled “chunky” — the large vegetable pieces crowd the cavity and make it hard to layer the ricotta evenly.
- Ricotta: Full-fat ricotta holds its texture better under the broiler than part-skim, which can release more liquid and thin out the sauce layer above it. Skip the garnish of fresh herbs on top — not worth the extra dish when the Parmesan crust is already doing the work.
- Ground turkey vs. ground chicken: Both work. Ground chicken is slightly softer in texture once cooked; either must hit 165°F (74°C) before you add the sauce.
Make-ahead notes
This recipe is well-suited to cooking in stages. Roast all four squash halves and make the full batch of sauce on the same day; store them in separate airtight containers in the fridge for up to 4 days. When you’re ready to eat, assemble only as many boats as you need — the unassembled squash halves and sauce keep better separately than they do once combined. Assembled and baked boats can be refrigerated for up to 3 days; reheat covered in a 350°F oven for 15–20 minutes until the center is hot, then uncover for the last 3–4 minutes to re-crisp the cheese. The sauce also freezes well for up to 3 months — freeze it flat in zip bags for faster thawing. The roasted squash halves do not freeze well; their texture becomes watery after thawing, so freeze only the sauce.
If something goes sideways
- The squash strands are waterlogged: After scraping the flesh, blot it with a paper towel before adding the ricotta. Excess moisture is the main reason the finished boat tastes diluted.
- The filling overflows during the second bake: The cavity shrinks slightly as the squash continues to cook. Fill to just below the rim of the squash wall, not flush with the top.
- The cheese isn’t browning under the broiler: Move the rack up one position so the boats are closer to the element. Two minutes is usually enough, but broiler intensity varies — watch it rather than timing it.
- The meat sauce is greasy: Drain any fat from the pan after the turkey is cooked through and before adding the tomato sauce. Even lean ground turkey can release enough fat to make the sauce oily if it’s not drained.
- The squash is hard to cut raw: Microwave the whole squash for 3–4 minutes first. It softens the skin just enough to make halving it safer without pre-cooking the flesh.
Seriously Good Skinny Spaghetti Squash Boats
Ingredients
3 tablespoons olive oil - plus more for drizzling
1 cup white onion - chopped
3 cloves garlic - chopped
1 pound ground turkey (minced turkey) - or ground chicken
1 jar Neapolitan Sauce or Pasta sauce Southern Hemisphere (Tomato Sauce in North America) - or 3 cups homemade tomato sauce
4 medium spaghetti squash - sliced in half lengthwise
1 container Ricotta cheese - 15-ounce
1 pack Parmesan cheese - for sprinkling
1 pinch Kosher salt - to taste
1 pinch ground black pepper - to taste
Instructions
- Set your oven to 400°F.
- Scrape the seeds out from the middle of the squash, creating a cavity inside.
- Drizzle a little oil over, salt and pepper over the squash and roast, cut side down for 30 minutes.
- While the squash is cooking, saute the onion in olive oil with 1/2 teaspoon of salt. Allow to cook for a few minutes until the onion is translucent. Add the garlic and allow to cook for another minute.
- Add the ground meat, 1 teaspoon salt and 1/2 teaspoon black pepper. Use a wooden spoon to break up the meat into small pieces. Allow the meat to cook through.
- When the meat is completely cooked through, add the tomato sauce. Bring the sauce to a low boil, cover, and allow the sauce to continue to cook until the squash is done cooking.
- After 30 minutes, remove the squash from the oven, carefully flip over and scrape the flesh with a fork. If the flesh breaks apart easily, the squash is done.
- Spoon two scoops of ricotta cheese into the cavity of the squash. Spoon the sauce over the top of the ricotta cheese until it fills the cavity, being sure not to overfill the squash. Sprinkle Parmesan over the top.
- Place back in the oven for 10 minutes. Broil for an additional 2 minutes until the cheese is golden and bubbly.
- Serve with a green salad, enjoy!
Notes
Nutrition
Your questions, answered
Can I cook the spaghetti squash in the microwave instead of the oven?
Yes, but the texture will be softer and wetter than oven-roasted. Pierce the squash all over, microwave on high for 10–12 minutes, then halve and scrape — blot the strands well before filling, since microwave-cooked squash releases noticeably more liquid.
How do I know the ground turkey is fully cooked before I add the sauce?
Use an instant-read thermometer — ground turkey is safe at 165°F (74°C). Color alone isn’t reliable; lean turkey can turn white and look done while still being underdone in the center of a clump.
Can I make this with ground beef instead of turkey?
Yes. Ground beef (80/20 or leaner) works well and gives a richer sauce. Cook it to 160°F (71°C), drain the excess fat before adding the tomato sauce, and expect a slightly heavier finished dish.
More mince recipes to try
- Spicy Beef Stuffed Peppers
- Hearty Beef Cauliflower Bake
- Beef Ricotta Lasagna Rolls
- Golden Turkey Empanadas
