01 -
Place the Lil' Smokies in a 4- to 6-quart slow cooker and spread them into an even layer.
02 -
Pour the pepperoncini juice evenly over the sausages so there is liquid in the bottom of the cooker.
03 -
Sprinkle the ranch seasoning and au jus gravy mix evenly over the top. Do not add extra salt.
04 -
Arrange the butter slices over the sausages, then scatter the sliced pepperoncini over everything.
05 -
Cover and cook on low for 2-3 hours, stirring once halfway through, until the sausages are hot and the sauce is glossy. For a faster option, cook on high for 1-1 1/2 hours.
06 -
Stir well, garnish with parsley if using, and keep on the warm setting for serving. Stir occasionally as guests snack.