1 1/2 cup all purpose flour
3/4 cup sugar
1 1/2 tsp baking powder
1/4 tsp baking soda
1/2 cup butter (1 stick)
1/4 cup milk
1/4 cup orange juice
1/2 tsp vanilla extract
1/2 tsp grated orange rind
powder sugar to top
Preheat oven to 350 degrees
Line the bottom of round 9 inch cake pan with wax paper and butter
Separate the eggs. In a large mixing bowl beat the egg yolks, butter, sugar, vanilla and orange rind together at medium speed until creamy. Add milk. Stir baking soda into orange juice and slowly add that to the large mixing bowl. (At this point don’t worry if it separates, it’ll still come out) Then add the flour and baking powder into the bowl lowering your mixer speed to avoid a huge mess, then allow to combine at medium speed.
In a medium bowl whisk the egg white to form “stiff peaks”. Mix in 1/2 the egg whites until combined, then gently fold in the second 1/2 eggs white to lighten up the batter a bit.
Pour your folded batter in your prepared pan. Take a thoroughly washed coin, wrap it in foil and slip it into the batter (2″ away from edge works well). Bake in the oven for 30min.
After it is finished baking let it cool in the pan on a cooling rack for 15 min and then remove from pan and allow to cool completely. After it is cooled dust with powdered sugar.
Enjoy (and be careful not to bite into the coin!)