In a small blender jar, blend together marmalade, chipotle chili, cumin, salt, pepper, and the 2 tablespoons water. Blend until almost smooth.
In the Instant Pot, combine the 1/4 cup water, onion, and apricots, if using. Place the pork on top and pour the sauce over everything. Do not stir.
Secure the lid on the pot. Close the pressure-release valve. Select MANUAL and set the pot at HIGH pressure for 0 minutes. At the end of the cooking time, allow the pot to sit undisturbed for 10 minutes, then release any remaining pressure.
Remove the pork tenderloin from the Instant Pot and let it rest for 5 minutes.
Slice the pork into medallions and arrange on a serving platter. Sprinkle with orange zest and parsley, if desired. Pour some of the sauce on the pork and pass the rest around at the table.
Tips And Tricks For Making Instant Pot Pork Tenderloin With Chipotle Orange Sauce
To make this dish low carb, use sugar-free marmalade and do not use the apricots.
You may also want to thicken the sauce with a cornstarch slurry. While the pork is resting, combine 1/4 cup water and 1 tablespoon cornstarch in a small bowl. Select SAUTÉ/Normal on the pot. Stir the slurry into the sauce and allow it to bubble. Cook, stirring frequently, until thickened, 1 to 2 minutes.