Add oil to pressure cooker over medium-high heat, add onion and garlic, sauté until translucent, approximately 3-4 minutes.
Add beans and water to pressure cooker. Secure the lid according to the instruction manual for your pressure cooker and turn to high flame or “high pressure” setting. Once pressure cooker reaches high pressure, begin timing and cook ~30 minutes.
Once cooking time has concluded, turn off the heat and allow the pressure cooker to cool down and release pressure naturally. Refer to your pressure cooker’s instruction manual to determine how best to know when the cooker is ready to be opened.
Once opened, add cilantro, salt, lime zest, and lime juice. Serve over a whole grain, such as brown rice or quinoa, with your favorite toppings like shredded cheddar, avocado, and chopped tomatoes.