Slice up your Kielbasa into about 1-inch thick slices.
In a large frypan place about 1 tablespoon of olive oil. Brown the Kielbasa slices in the olive oil in the frying pan.
Once the Kielbasa is browned spray your crockpot with a nonstick spray, or place it in a crockpot liner.
Dump into the crockpot your Kielbasa, cranberry sauces, brown sugar and bbq sauce. Break up the cranberry sauce with a fork before putting it in the crockpot.
Set your crockpot on low
Stir about every hour or so to help to combine the flavors as well!
Allow to cook for about four hours.