This easy SOURDOUGH OATMEAL POTATO BREAD Recipe. Step-by-Step. is perfect for busy families. Comes together quickly with a few staple ingredients! INGREDIENTS1 1?4 cups proofed sourdough starter 1 cup milk 4 tablespoons margarine 1?4 cup sugar 1 1?2 teaspoons salt 3 1?2 cups bread flour 1?3 cup oatmeal...