This recipe was belonged to my grandmother and when I was an teenager and she was cooked those polish sausage with sauerkraut and I haven't eat sauerkraut before and she wanted me to tried to tasted it so I did and it is so delicious and tasty. I fixed some and my famliy and I love it.
Cut sausage into 1-inch sliced sausages and chopped onions. Add butter in a skillet until melted. Put the sausages and onions in melted butter and cover, cook for 15 minutes on medium-low heat and add sauerkraut in sausage mixture and stir well. Cover, cook for ten more minutes until they are done.