1. In a bowl season chicken with garlic powder, 1 teaspoon of salt, ½ teaspoon of black pepper. In a 6-quart Dutch oven heat oil over medium-high heat, add in chicken, brown slightly, lower heat to medium, cover and cook for 20-25 minutes, or until chicken has cooked, if desired add in a tablespoon of water. Once the chicken is cooked, remove from the pot.
2. Raise heat to medium-high and saute onions for 2 minutes, add in minced garlic and cook an additional 30 seconds. Add chopped chili's, broth, and seasonings. Mix well, add in chicken again. Cook for 30 minutes.
3. In a small bowl, whisk together milk and masa. After the 30 minutes, lower the heat to medium-low and add in milk and masa mixture, mix. Cook for an additional five minutes and add in the beans. Continue cooking for five minutes to heat the beans through (you can leave it in longer, but then the beans begin to break down).