Looking for a simple and healthy breakfast that you can make the night before you need it? My Overnight Banana Nut Bircher Muesli is the answer! I was first introduced to muesli on my travels to Switzerland, ever since my first taste I was hooked. There are so many ways you can flavor muesli, this is one of my all-time favorites. Feel free to experiment with all kinds of fruits, nuts, yogurt flavors and anything else you can dream up.