Swedish Sour Cream Lamb Stew

2 T butter
1.5# lamb stew pieces
3 med onions, sliced
1 med green pepper, sliced
1.5 tsp salt
2 tsp paprika
1 c water
1 c sour cream

Melt butter in skillet, add lamb and cook until all sides browned.  Add onions, green peppers, salt and paprika.  Cover; cook over low heat 15 minutes.  Add water.  Cover and cook 1 hour until tender.  Add sour cream, heat to serving temperature over low heat.   Serve over noodles or rice.