This recipe from Margaret Haen, of Sheboygan, Wisconsin, uses a pound and a half of apples, making the cake dense and moist.
Preheat oven to 350 degrees. Butter a 9-by-13-inch baking pan; set aside. In a large bowl, whisk together flour, sugars, baking soda, salt, cinnamon, ginger, and nutmeg. Add the apples, walnuts, butter, and eggs; stir just until combined.
Spoon into pan; smooth with a spatula. Bake 40 to 45 minutes, or until a toothpick inserted in center comes out clean. Cool in pan. Dust with confectioners' sugar to serve.