01 -
Place the chicken wings in the slow cooker. Season evenly with sea salt and black pepper, tossing to coat.
02 -
Melt butter and garlic together in a microwave-safe bowl or saucepan. Pour over wings and stir to distribute.
03 -
Cover and cook the wings in the slow cooker on high for 2.5-3 hours or low for 5-6 hours, until tender.
04 -
Transfer wings to a lined baking sheet and broil 5 minutes per side, until golden and crispy.
05 -
Sprinkle wings with shredded parmesan and return to the broiler for 1-2 minutes, until cheese is melted.
06 -
Optionally top with green onions or chives before serving.