How to Make It
Cut the squash in half lengthwise; scoop out and discard seeds.
Pour 1 cup water to a programmable electric pressure cooker (such as an Instant Pot). Place a wire metal steam rack in pot. . Arrange cut halves of squash on top of steam rack. Cover Instant Pot, and fasten lid. Lock and seal steam valve. Set to HIGH pressure for 7 minutes. (The pot will take about 15 minutes to come up to pressure before the cooking program begins.) Allow pressure to naturally release for 10 minutes, then carefully release pressure by turning valve to VENT. Remove lid, and, using tongs, drain accumulated liquid from squash halves. Using a fork, scrape out flesh into spaghetti-like strands in a bowl (should have 4 to 6 cups)
Add olive oil, thyme, lemon zest, and salt, to squash and toss to coat. Serve hot.