How to Cook Spaghetti Squash in an Electric Pressure Cooker Adapted from https://www.thekitchn.com/how-to-cook-spaghetti-squash-in-an-electric-pressure-cooker-249805 tags: pot I made this. Servings: Makes 1 (2-pound) squash INGREDIENTS 1 (2-pound) spaghetti squash 1 cup water STEPS 1) Pierce the squash all over with a paring knife, making about 12 (1/2-inch) vents for the steam to penetrate the squash's skin. 2) Add the water to the instant pot and then set the squash on a trivet in the pot. 3) Cook on high pressure for 15 minutes, then release the pressure and remove the squash. 4) Give the squash at least 10 minutes to cool, then halve the squash along the equator, discard the seeds and scoop out the squash. 5) Shred the squash with a fork, season and serve.