Place the brats in a food processor and pulse into crumbles, or chop fine.
Brown the crumbled bratwurst with the poblano, onion, and garlic in oil.
Add the sauteed mixture to a crockpot along with scallions, drained corn, chillies, mayonnaise, sour cream, Parmesan cheese, cumin, chili powder, salt, black pepper and half the Monterrey Jack cheese.
Stir mixture well then top with remaining shredded cheese.
Cover and cook on low for two hours or until hot and cheese is melted.