Step 1

Spray bottom of slow cooker with non stick cooking spray

Step 2

Slice kielbasa into ½ inch slices, and place into slow cooker

Step 3

In a small bowl, mix the BBQ sauce, brown sugar, mustard and onions well

Step 4

Pour sauce mixture over kielbasa, and stir to combine

Step 5

Cover and cook for 2-3 hours on high or 4-5 hours on low or until heated through