Preheat your oven to 400°F
Prepare spaghetti squash by cutting it in half lengthwise and using a spoon to scoop out the middle portion of seeds and pulp.
Lightly brush the spaghetti squash with olive oil and place the halves face up in an oven safe dish or tray.
Place squash in oven for 30-40 minutes until cooked through. The thickness of your squash will determine how long you will need. I usually take them out once I see a slightly browned surface.
While the squash is in the oven, begin preparing the sauce by cooking the ground meat in a large saucepan over medium heat. You can use ground beef, turkey, etc. If omitting meat and only using vegetables, place 2 tbsp olive oil in a pan before cooking vegetables.
Place any extra veggies into your meat mixture and allow them to cook through.
Add your pasta sauce!
Let your sauce simmer on low until your squash is ready.
Once the squash is done, let the squash cool until they're cool enough to handle. Then use a fork to "spoon" out the spaghetti squash into stringy squash "noodles."
Place squash in a bowl and then top with your pasta sauce!