Preheat the oven to 350 F.
Add the oil to a large frying pan and bring the heat to medium high.
Add the onion and peppers and cook for 15 minutes, stirring frequently.
Meanwhile, place the tortillas into the oven for 5 minutes to warm up.
Add the black beans, chili powder, cumin, garlic granules, salt, smoked paprika, and lime juice. Cook and stir for 3 minutes on low heat.
Remove the tortillas from the oven and add a scoop of the black bean mixture to the tortillas, add toppings and serve.
