In a skillet, heat oil over medium heat until hot. Add onion and garlic and sauté until softened.
Stir in the beans, tomatoes, jalapenos (if using), lime juice and seasonings. Bring mixture to a boil. Reduce heat; simmer, uncovered, stirring occasionally, for 3 to 5 minutes, or until mixture begins to thicken.
Evenly divide mixture among taco shells. Top with cheese, avocado, tomato and scallions.
In a skillet, heat oil over medium heat until hot. Add onion and garlic and sauté until softened.
Stir in the beans, tomatoes, jalapenos (if using), lime juice and seasonings. Bring mixture to a boil. Reduce heat; simmer, uncovered, stirring occasionally, for 3 to 5 minutes, or until mixture begins to thicken.
Evenly divide mixture among taco shells. Top with cheese, avocado, tomato and scallions.
Thank you!