Baked Beans in Sour Cream Basic-Recipes.com9/1/06 1 pound of great northern beans or small limas 3/4 cup of brown sugar 1 tablespoon of molasses 3 teaspoons of salt 3/4 cup of butter 1 tablespoon of dry mustard 2 cups of sour cream   Soak overnight and drain. Add fresh water and 1 teaspoon of salt and cook until tender. Drain and rinse. Add other ingredients with sour cream last. Bake at 350ºF. for 40 minutes. Uncover the last 8 minutes.