1. Preheat oven to 350° F.
2. In the bowl of your mixer cream butter and sugar until smooth, at least 3 minutes
3. Beat in extracts and egg.
4. In a separate bowl combine baking powder and salt with flour and add a little at a time to the wet ingredients. The dough will be very stiff. If it becomes too stiff for your mixer turn out the dough onto a countertop surface. Wet your hands and finish off kneading the dough by hand.
5. DO NOT CHILL THE DOUGH. Divide into workable batches, roll out
1. In a small saucepan over medium heat, bring milk to simmer. Whisk in sugar and cocoa powder and stir until no lumps remain.
2. Stir in chocolate chips and vanilla and cook, stirring occasionally, until chocolate is completely melted. Turn off heat.
Pour hot chocolate into mugs, then top with whipped cream and chocolate shavings.