This delightful savory pie features a delicious combination of tender potatoes and earthy mushrooms, all enveloped in a fluffy and light batter. Perfect for a lunch or dinner, it can be served warm or at room temperature, making it an excellent choice for picnics or gatherings. The pie is easy to prepare and can be made ahead of time, allowing the flavors to meld beautifully. The crispy top and soft filling create a satisfying contrast that everyone will enjoy. Serve it alongside a fresh salad or a dollop of sour cream for an extra touch!