Step number 1. Adjust the cooking rack in your toaster oven (or oven) to the bottom position and preheat to 425 degrees F. Lightly oil a baking sheet or line with a silicone baking mat.
After that, Use a sharp knife to carefully stab the squash a few times on each side, then microwave 4 to 5 minutes. Watching out for steam, slice the squash in half and scoop out the seeds.
After that, Rub each half with oil and season well with salt and black pepper. Place squash on the pan and cook until fork tender, about 30 to 45 minutes, depending on the size of your squash.
Thanks to: https://toasterovenlove.com/spaghetti-squash-burrito-bowls/