Open the packages of Little Smokies sausages and drain off any excess liquid that may be in the package. Add the drained Little Smokies to a 5 quart or larger slow cooker.
Cut the American cheese (or Gouda if using) into 1 inch chunks and scatter the chunks over the top of the sausages in the slow cooker.
Evenly pour the bottled barbecue sauce over the cheese and sausages.
Stir to mix a bit, and then cover and cook on LOW for 2 hours stirring every 30 minutes to ensure the cheese is melting evenly.
Turn slow cooker to the WARM setting and set out cocktail toothpicks to allow your guests to easily serve themselves straight from the slow cooker.