Taco Stuffed Spaghetti Squash with Ground Beef

Taco stuffed spaghetti squash brings familiar Tex-Mex flavors to a cozy ground beef dinner. The squash turns into tender strands, while salsa-seasoned beef and melted sharp cheddar make each half hearty and savory.

The shells do double duty as the baking vessel, so the squash, cheese, and beef come together in one finished dish. A few small technique choices help the strands stay tender and the filling cling to them.

Roast the squash until the strands are tender

Spaghetti squash needs to soften before you rake its flesh into strands. Roasting it cut-side down helps the cut surface cook against the pan, while the rimmed baking sheet catches any moisture. Seasoning the cut sides with olive oil, kosher salt, and black pepper gives the squash flavor from the start.

Check for doneness by testing the flesh with a fork. It should be tender enough to pull into strands without turning to mush. If the halves are too large to sit side by side on one baking sheet, use two sheets so they have room to roast.

Build a savory, well-seasoned beef filling

Finely diced yellow onion softens in olive oil and adds a gentle savory base. Ground beef brings the substantial, familiar flavor that makes this feel like a dinner rather than a side. Breaking it up as it browns helps it distribute evenly across the squash.

Chili powder and ground cumin give the beef its taco-inspired character, while smoked paprika adds depth and garlic powder rounds out the seasoning. Stir salsa and water into the browned beef, then let the mixture simmer until cohesive. This keeps the filling moist enough to spoon over the strands without leaving it loose and watery.

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Keep the strands inside the shells

When the squash is tender, turn the halves cut-side up and rake the flesh with a fork. Work gently and leave the strands inside each shell; the shells hold the filling and make the dish easy to serve. Tossing the strands with some of the shredded sharp cheddar spreads its flavor through the squash, instead of leaving every bit of cheese on top.

Spoon the beef mixture over the strands and finish with the remaining cheddar. Return the filled halves to the oven until the cheese melts and the filling is hot. Avoid scraping through the shell as you rake, since keeping the strands contained helps each half hold together.

What to expect from the finished dish

The squash should be tender with distinct, forkable strands, not watery or collapsed. The ground beef topping is savory and warmly seasoned, and salsa gives it a tangy note that works with the cheddar. Because the squash itself is mild, seasoning it before roasting and mixing in some cheese helps every bite taste balanced.

Frequently Asked Questions

How do you know when spaghetti squash is ready to fill?

Test the flesh with a fork after roasting. It should yield easily and separate into strands when raked, while still holding its shape in the shell. If it resists the fork, it needs more roasting before you add the beef and cheese.

Why roast the squash cut-side down?

Placing the cut sides against the baking sheet lets the squash roast until its flesh is tender enough to rake into strands. Use a rimmed sheet to catch moisture, and spread the halves across two sheets if they do not fit side by side.

How can you keep the beef filling from being watery?

After stirring in the salsa and water, simmer the mixture until it comes together rather than spooning it over the squash while it is loose. The filling should stay moist, but not runny, so it sits on the strands instead of pooling in the shell.