Place the red (russet or yukon gold) potatoes, garlic, and chicken broth in Instant Pot. Season this Instant Pot Mashed Potatoes recipe with salt and pepper.
Add the lid and flip pressure valve to “Sealing” position. Select the “Manual” option and adjust setting to “high.” Set the pressure cook time to 8 minutes. When finished, allow pressure to release naturally for 10 minutes, then do a quick release for any remaining pressure.
Carefully open lid. There is no need to drain the potatoes. Add cream cheese. Mash the potatoes. It is easy to use a potato masher or an immersion blender until blended, but not completely smooth. Season with additional salt and black pepper, to taste, and serve immediately.