Preheat oven to 350 degrees F (175 degrees C). Grease a 9-inch round cake pan.
In a medium bowl, whisk together the egg yolks, flour, sugar, salt, milk, melted butter, and vanilla extract until smooth. Stir in the raisins, if desired.
In a separate bowl, beat the egg whites until soft peaks form. Gently fold the egg whites into the egg yolk mixture.
Pour the batter into the prepared pan and bake for 30 minutes, or until the top is golden and a toothpick inserted into the center comes out clean.
Let cool for 10 minutes before serving.
Interesting Facts
Kaiserschmarrn is a traditional German-Austrian dessert that is traditionally served with a fruit compote.
This recipe for Kaiserschmarrn is an easy and delicious way to enjoy this traditional dessert.
Kaiserschmarrn is sometimes referred to as "Emperor's Pancakes" as it is said to have been a favorite of Emperor Franz Joseph I of Austria.