Heat a large heavy-duty pan to medium/high heat.
Add oil and onions. Cook onions for 2-3 minutes or until almost golden. Add garlic; cook for a few seconds then add beans,corn, salt and taco seasoning. Cook down for another 2 minutes while stirring.
Lastly, add the cooked shredded chicken and cilantro. Cook for 2 minutes.
Remove from heat and serve with a side of rice or in a burrito.