Divide the meat in to six pieces.

Take 1 piece and pat it down a bit and then place a teaspoon slab of butter in the middle. Fold the sides over as best you can and then flatten to a patty. Repeat with remaining meat and butter.

Liberally sprinkle salt and pepper on both sides of the burgers.

Heat up a large cast iron skillet and then place the burgers on it. Do not move the burgers and cook for 4-5 minutes per side. If using cheese, place on burgers after you flip them. 

When done let set for a few minutes.

Meanwhile place sliced onions and mayo in a baggie. Squish the mayo and onions around until the onions are all covered in mayo.

Add the pork rinds, parmesan cheese, paprika and garlic powder to a food processor to make the breading. Then pour them into a large shallow bowl and mix well.

Take out the onions from the baggie and mix around in the pork rind breading. Carefully place the onions into the basket of the air fryer. Sprinkle with any leftover bread crumbs on to the onions.

NOTE: I like to place a piece of foil under the basket to make clean up easier.

Set the air fryer to 400 degrees F and cook for 5-6 minutes.  Check at 5 minutes to make sure they don't burn.

Place the burgers on a piece of leaf lettuce, top with pickled jalapeños and fried onions. 

NOTE: For pickled jalapeños and onions I used this recipe with Swerve sweetener and just added the onions to it.