Apple Kielbasa Crockpot Dish

2 apples, cored, 1/4” slices
1 c. water
1 medium size head cabbage, in small wedges
2 medium potatoes, peeled, 1/4” slices
2 large links kielbasa, in 1/2” pieces
1 tsp. sugar
1/2 tsp. olive oil
Sliced onion, optional
Salt and pepper to taste

Layer ingredients in crockpot, starting with cabbage wedges, kielbasa, apples, then potatoes. Whisk together water, sugar, olive oil, salt and pepper. Pour over layers in crockpot. Cook on low for six hours. Serve.