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!