Sweet N' Spicy Kielbasa This is one of those meals you will make over and over.... .Also good cut into smaller chunks for a great party appetizer! 1 cup brown sugar 6 tbsp. spicy mustard 1 small onion, finely chopped 2 lbs. smoked Kielbasa, cut into 2 inch pieces Combine first 3 ingredients; add Kielbasa, stirring to evenly coat. Cover and cook on low heat 2-1/2 to 3 hours in crock-pot, stirring occassionally. 6 servings.