Gather your ingredients. Chop half a head of cabbage into bite-sized pieces and finely dice one medium onion. Slice about 12 ounces of kielbasa into thin rounds.

Heat a large skillet over medium heat and add 2 tablespoons of butter or oil. Once melted, add the diced onions and sauté for about 3-4 minutes until translucent.

Stir in the sliced kielbasa, cooking for approximately 5-7 minutes, turning occasionally until golden brown and slightly crispy.

Fold in the chopped cabbage with kielbasa and onions. Season with salt and pepper. Cook for 10-15 minutes until the cabbage wilts down but retains some crunch.

Taste and adjust seasoning if needed. Serve hot and enjoy!