Quick Answer
To cook spaghetti squash, cut it in half lengthwise, scoop out the seeds, brush the cut sides with a little oil and salt, and roast cut side down at 400 F for about 30 to 45 minutes.
It is ready when a fork pierces the skin with light pressure and the flesh pulls into strands. Stop there. Overcooking is what makes it mushy and watery.
In a hurry, the microwave works too: poke holes, cook the halves for about 10 to 12 minutes, and rest a few minutes before shredding.
What Is Spaghetti Squash?
Spaghetti squash is a winter squash with pale yellow skin and mild, slightly sweet flesh. When cooked, the flesh separates into long, noodle like strands.
It is popular as a lighter stand in for pasta. Penn State Extension, citing USDA data, lists one cup of spaghetti squash at about 76 calories, far less than a cup of cooked pasta.
How to Pick a Good Spaghetti Squash
Look for a squash that is firm, heavy for its size and evenly golden yellow. Green patches mean it was picked early.
Avoid soft spots, cracks or mold. A dry, intact stem is a good sign.
A medium squash of about 3 to 4 pounds yields roughly 4 to 5 cups of strands, enough for four side servings.
Whole squash keeps for one to two months in a cool, dry spot, so you can buy a few at once in fall.
How to Cut Spaghetti Squash Safely
The rind is hard, and this is where most kitchen accidents happen. Set the squash on a damp towel so it cannot roll.
Slice off the stem end to create a flat base, then stand it upright and cut down through the center with a large, sharp chef's knife.
If it is too hard, poke it a few times and microwave it whole for 3 to 5 minutes to soften the rind before cutting.
Tip: Cutting crosswise into rings instead of lengthwise gives you longer strands, because the strands run around the squash, not end to end.
How to Roast Spaghetti Squash
1. Heat the oven to 400 F and line a rimmed sheet with parchment.
2. Halve the squash and scrape out the seeds and stringy center.
3. Brush the cut sides with olive oil and sprinkle with salt and pepper.
4. Place cut side down. This steams the flesh gently while the edges brown.
5. Roast for 30 to 45 minutes. Start checking at 30 minutes. Rings cook faster, usually 25 to 30 minutes.
6. Flip, let it cool for 5 to 10 minutes, then rake the flesh with a fork from the sides toward the center.
For drier, more separate strands, roast cut side up instead. They take a few minutes longer and brown more on top.
How to Cook Spaghetti Squash in the Microwave
Penn State Extension describes a microwave method for spaghetti squash, and it is the fastest option on a weeknight.
Halve and seed the squash, poke the skin with a fork, and place the halves cut side down in a dish with a couple of tablespoons of water. Microwave on high for about 10 minutes, then check. Add 2 minute bursts until tender.
Never microwave a whole squash without poking holes first. Steam builds up inside and it can burst.
Other Methods
Instant Pot or pressure cooker: Put the halves on the trivet with a cup of water and cook at high pressure for about 7 minutes, then quick release.
Air fryer: Smaller halves or rings fit best. Air fry at 370 F for about 20 to 25 minutes.
Slow cooker: Pierce a whole squash several times, add a cup of water, and cook on low for 6 to 8 hours. The strands come out softer.
Boiling: I skip it. Boiled squash takes on water and gets soggy.
Why Is My Spaghetti Squash Watery?
Spaghetti squash is naturally high in water. The main causes of soggy strands are overcooking and steaming in too much liquid.
To fix it, salt the strands lightly and let them drain in a colander for 10 minutes, then pat dry with a towel. A quick sauté in a hot pan also cooks off extra moisture.
Add sauce right before serving rather than letting the strands sit in it.
Best Ways to Serve It
- With marinara and meatballs, like classic spaghetti
- Tossed with butter, garlic and parmesan
- With pesto and cherry tomatoes
- As a base for chicken alfredo or shrimp scampi
- Baked into a casserole with cheese and spinach
- Served in the shell as a boat with toppings, then broiled
How to Store and Freeze Cooked Spaghetti Squash
Refrigerate cooked strands in a covered container within two hours of cooking, and eat them within three to five days.
To freeze, drain and pat the strands dry, pack them flat in freezer bags, and press out the air. University extension guidance says frozen squash keeps for up to about a year, though the texture softens after thawing, so they suit casseroles and soups best.
Winter squash should not be home canned as a puree or mash. NCHFP only gives a pressure canning method for cubed pumpkin and winter squash, and spaghetti squash does not hold a cube shape, so freeze it instead.
Frequently Asked Questions
Can you eat the seeds?
Yes. Rinse, dry and roast them like pumpkin seeds. They are smaller and finish in about 10 to 15 minutes.
Can you eat the skin?
It is technically edible but very tough, so most people discard it.
Does spaghetti squash taste like pasta?
No. It is mild and slightly sweet with a light crunch. Sauce does most of the work.
How do I know when it is done?
The skin gives under a fork and the flesh separates into strands easily, but still has a little bite.
Bottom Line
Halve it, seed it, oil it and roast cut side down at 400 F until just tender, usually 30 to 45 minutes. Check early, drain if watery, and sauce it right before serving. Cook it that way and you get distinct, satisfying strands instead of a soggy pile.
