Heat a large skillet over medium heat and add the ground turkey, diced onion, and minced garlic. Cook until the turkey is no longer pink and the onion softens, breaking up the meat as it cooks.
Transfer the turkey mixture to the slow cooker. Add the drained white beans, chicken broth, chili powder, cumin, oregano, salt, and black pepper.
Stir everything together until the spices are evenly distributed. Cover and cook on low for 6 to 7 hours.
Taste and adjust salt or pepper if needed. Serve hot with shredded cheddar cheese and chopped cilantro on top.