4 eggs
1 1/2 cups all-purpose flour
3/4 cup white sugar
2 teaspoons baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon ground nutmeg
1 teaspoon vanilla extract
Preheat oven to 350 degrees F (175 degrees C). Grease cookie sheets.
In a large bowl, beat eggs, sugar, baking powder, baking soda and salt until light and fluffy, about 10 minutes. Mix in the flour, 3/4 cup at a time, beating after each addition alternately with the egg mixture. Stir flour into egg mixture until well blended. Finally, mix in the nutmeg, vanilla extract, and butter. Drop sides of cookie sheets onto prepared cookie sheet.
Bake for 10 to 15 minutes in the preheated oven, until the edges are somewhat brown. Remove from cookie sheet to cool on wire rack. Cool completely, cover and refrigerate.