Holland Tea Cakes

Ingredients

 * 1 cup (240g) sugar
 * 1 stick butter (preferably melted)
 * 2 eggs (separated)
 * 2 cups (280g) flour
 * 1 – 2 teaspoons cinnamon (more or less to taste)
 * Colored sugar or nuts for topping

Directions

 * 1) Preheat oven to 350°F (180°C).
 * 2) Mix the butter and sugar until completely mixed.
 * 3) Add egg yolk and mix some more.
 * 4) Add flour and cinnamon and mix thoroughly preferably by hand (though this all can be done in a mixer if you insist).
 * 5) Pour batter into a cookie pan, spread over the whole pan use the palm of your hand to smooth the batter (this is the hardest part)
 * 6) Brush on leftover egg white.
 * 7) Add whatever toppings you want spread evenly across the batter.
 * 8) Put cookie sheet in oven until cookies are golden brown (about 20 minutes).
 * 9) Remove, and let cool. Before they get too cool, cut them into small squares about 1 in by 1 in (2.5cm x 2.5cm).

Source
Holland Tea Cakes from the Wikibooks Cookbook—original source of recipe licensed under the GNU Free Documentation License