Buttery German Apple Cake

Buttery German Apple Cake

Whisk granulated sugar, lemon zest, baking powder, salt, and 1 cup flour in a large bowl. Create a well in the center and add egg, vanilla, and remaining ½ cup butter. Using a fork and working in a circular motion, stir until dough starts to form large clumps. Using lightly floured hands, knead very gently in bowl until dough comes together in one large, soft mass (you may need to add a little bit of flour to dough to keep from sticking to your hands).