Preheat oven to 375 degrees F and prepare a 4 quart baking dish using cooking spray.
Brown and chop ground pork in a large skillet over medium heat on the stove top.
Drain extra grease and add in chopped onions, saute 3-4 minutes.
Stir in taco seasoning and one cup of water.
Add salsa, green chilis, cream cheese, black beans and corn.
Combine ingredients and remove from heat.
Cover bottom of baking dish with 2 cups of Fritos corn chips.
Layer ground pork taco mixture evenly over the corn chips.
Sprinkle cheese on the ground pork layer and top with the remaining 2 cups Fritos.
Cover with foil and bake for 15 minutes or until the cheese is melted.
Remove foil and bake additional 5 minutes. Serve immediately and customize with toppings.