Step 1

Set a 6-quart Instant Pot® to saute on high (see Cook's Note) and cook the bacon, stirring occasionally, until golden brown and the fat has rendered, about 7 minutes. Add the onion, bell pepper, garlic, beans, 4 teaspoons salt and 5 cups water and stir to combine. Follow the manufacturer's guide for locking the lid and preparing to cook. Set to pressure cook on high for 45 minutes. After the pressure cook cycle is complete, follow the manufacturer's guide for quick release and wait until the quick release cycle is complete. Be careful of any remaining steam and unlock and remove the lid. Stir to combine.

Step 2

Using a potato masher or an immersion blender, smash the beans so that all of the beans have been crushed but the mixture is thick and not completely smooth (refried beans should still be pourable at this point, but they will thicken as they sit). Transfer to a large bowl, let sit 10 minutes to thicken and serve.