Dice the onion and mince the garlic, preparing them for sautéing.
Heat the olive oil in a large pot over medium heat, then add the diced onion.
Sauté the onion until it becomes translucent and fragrant, about 3-4 minutes.
Add the minced garlic to the pot and cook for another 30 seconds until fragrant.
Pour in the chicken broth and bring it to a gentle simmer.
Add the cooked, shredded chicken and the white beans to the broth.
Stir in the ground cumin and season with salt and pepper to taste.
Let the mixture simmer uncovered for about 15 minutes, allowing flavors to meld and the soup to slightly thicken.
Once cooked, squeeze fresh lime juice into the chili, stir to combine, and taste for seasoning adjustments.
Garnish with chopped cilantro just before serving for a bright, fresh flavor.
Serve the white chicken chili hot, with additional lime wedges or cilantro if desired.