Preheat the oven to 450

Mix the pork with the chips, cheese, and jalapenos, if using. Stir well to combine.

Lightly grease a baking sheet.

One by one, stuff as much of the pork mixture into the mushroom caps, piling them nice and high. There should be enough pork for almost all the mushrooms depending on what size they are and how much you fill them. Place each filled mushroom onto the baking sheet.

Bake at 450 for 15 to 20 minutes until the pork is starting to brown and the mushrooms are tender.

Use a spatula to put the mushrooms onto a platter. Put a small spoon of sour cream on each mushroom, and then sprinkle on the cilantro. Serve.