01 -
Turn your oven up to 400°F (200°C) and line a baking sheet with parchment paper so the squash doesn't stick.
02 -
Cut your spaghetti squash in half the long way. Scoop out all those seeds and stringy bits (just like a pumpkin). Drizzle the cut sides with olive oil and sprinkle with a little salt and pepper.
03 -
Place the squash halves face-down on your baking sheet. Pop them in the oven for about 35-40 minutes. You'll know they're done when you can easily poke the skin with a fork.
04 -
While the squash is doing its thing in the oven, warm the olive oil in a saucepan over medium heat. Toss in the garlic and let it sizzle for about 30 seconds until it smells amazing. Add the crushed tomatoes, oregano, basil, salt, pepper, and red pepper flakes if you're using them. Let everything bubble gently for 10-15 minutes, giving it a stir now and then.
05 -
When the squash is done, let it cool for a few minutes so you don't burn your fingers. Use a fork to scrape the inside - it'll come apart in spaghetti-like strands (that's why it's called spaghetti squash!). Put all those strands in a bowl.
06 -
Spoon your homemade marinara sauce over the squash strands. Sprinkle with fresh herbs and some Parmesan cheese if you're using it. Grab a fork and dig in!