In a lightly greased cast-iron skillet on medium, heat black beans, kidney beans, tomatoes, green chilies, 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 fresh cilantro and your preferred toppings and serve with a large bowl of tortilla chips for dipping.
Notes
Cooked ground beef or sausage may also be added in for an even heartier dish.