Add all the ingredients into the Instant Pot. In any order.
2 1/2 cups dried pinto beans, 6 cups vegetable stock, 3 cloves garlic, 1 whole onion, 1 tsp Mediterranean sea salt, 1 tsp Ground pepper, 1 1/2 tsp cumin, 1/2 tsp red pepper flakes
Press "beans." Set timer to 45 minutes. Turn valve to sealed.
When the timer goes off, you can allow to vent naturally or manually move the valve to venting. When it is finished venting, open the lid.
Remove the onion. If you have a few pieces left in there, it is ok.
Place a strainer inside a large bowl.
Next, wearing oven mitts, remove the silver pot inside the instant pot to drain the beans partially. Drain the beans in the strainer.
Pick up the strainer to shake the beans a bit. Place them back in the silver pot. Pour about 1/4 of the liquid back into the pot (about 1/2 a cup bean stock).
You can save the rest of the bean stock for another purpose, like a soup. Or, just rinse it down the sink.
Use an immersion blender to blend the beans into a blended consistency with a few chunks of beans.Serve warm with tortilla chips, or save and add to another recipe later!