Place the carrots in the pressure cooker insert. Stir 1 teaspoon salt and the bourbon (if using) into the water and pour over the carrots.
Seal the lid of the Instant Pot according to the owner's manual and cook on HIGH pressure for 2 minutes. When the timer is done, do a quick release of the pressure (consult your owner's manual for more specific instructions).
Drain the water from the carrots and return them to the Instant Pot. Combine the melted butter, honey, and vanilla; drizzle the mixture over the cooked carrots and then evenly sprinkle with cinnamon and the remaining 1/2 teaspoon salt. Gently stir until the carrots are evenly coated with the glaze. Set the Instant Pot to WARM until ready to serve and stir well before serving.