Birchermüesli is a popular Swiss breakfast dish made with rolled oats, grated apples, yogurt, and nuts. Using a food processor to grate the apples makes the process much quicker. The ingredients are mixed together and left to soak overnight, allowing the flavors to meld together. Birchermüesli is a healthy and refreshing breakfast option that is often enjoyed with a drizzle of honey or a sprinkle of cinnamon.