In a lightly greased cast iron skillet on medium, heat black beans, kidney beans, tomatoes, green chiles, and white corn for about 5 minutes, stirring occasionally.
When bubbles start to form, stir in cream cheese, Mexican cheese, sour cream and taco seasoning. Heat and stir for another 5 minutes or until bubbles appear.
Remove from heat and serve hot by placing the cast iron skillet on a trivet or oven-safe hot pad. Add toppings and serve with a large bowl of tortilla chips for dipping.
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Notes
Optional toppings: Extra cheese, fresh diced tomatoes, lettuce, olives, diced red onions, fresh or sauteed bell peppers, avocado slices