01 -
Place sliced kielbasa in an even layer at the bottom of the slow cooker.
02 -
In a small bowl, whisk together brown sugar, ketchup, Worcestershire sauce, garlic powder, onion powder, and black pepper until well combined.
03 -
Pour the sauce over the kielbasa and gently toss to ensure each piece is coated.
04 -
Cover the slow cooker and cook on low for 4-6 hours, or on high for 2-3 hours, until the kielbasa is tender and flavors are melded.
05 -
Give the kielbasa a final gentle stir before serving, ensuring each piece is coated in sauce. Serve warm, straight from the slow cooker.