In a large pot or Dutch oven, heat the olive oil over medium heat. Add the onion and bell pepper and cook 2-3 minutes until softened.
Add the ground turkey, season with salt and pepper, and cook until browned and cooked through, breaking it up into small pieces.
Stir in the taco seasoning, followed by the crushed tomatoes, diced green chiles, black beans, mashed pinto beans, corn, and broth.
Bring to a boil and then reduce heat to a low simmer. Simmer for 15 minutes to allow the flavors to develop.
Serve with toppings as desired.