Put spinach into a glass bowl and de-thaw in microwave for 1 minute.
Stir all ingredients together in a mixing bowl.
Add dip mixture to a round, oven-safe baking dish that will fit inside of your pressure cooking pot. Cover dish with foil.
Pour 1 cup water into the pressure cooker pot and place a trivet or pot lifter in the bottom of the pot. If you don’t have a trivet to lift the pan out of the hot pressure cooker, make a sling out of of a large foil strip.
Center the pan on the trivet or foil strip and lower it into the pressure cooker.
Lock the lid in place. Select High Pressure and set the timer for 10 minutes.
When timer goes off, turn off the pressure cooker and turn the steam release valve to “venting” to release the pressure. When the pressure valve drops, remove lid and remove dish from pressure cooking pot.
Remove foil and serve the spinach dip hot with a sliced Baguette, tortilla chips or crackers.