Homemade Thin Mints (I found this recipe on Baking Bites)

2 1/4 cup all purpose flour
1/4 cup cornstarch
6 tbsp unsweetened cocoa powder
1/2 tsp salt
1 cup of sugar
1/2 cup butter,softened
1/3 cup milk
1/2 tsp vanilla
3/4 tsp peppermint extract
In a small bowl,whisk together flour,cornstarch,cocoa, and salt.
In a large bowl,cream together butter and sugar, with the mixer on low,add in milk and vanilla and peppermint.
Gradually add in flour mixture until fully incorporated.
Shape dough into 2 logs,about 1 1/2 inch's wide.Wrap in plastic wrap and freeze for about 2 hours,dough should be very firm.
Preheat oven 375 degrees.
Slice dough in 1/4 inch slices,place on parchment lined cookie sheet.
Bake for 13-15 minutes,until edges are firm.
Cool completely before moving onto the next step.
Dark Chocolate Coating
10 oz Semi-Sweet or Dark Chocolate
1/2 cup butter,softened
In microwave safe bowl, Melt chocolate and butter on high power,stopping and stirring every 45-60 seconds,until the mixture is smooth and have the consistency of syrup.
Dip cookie in melted chocolate,making sure to coat cookie.
Transfer cookie to parchment paper or wax paper to set up for 30 minutes.
Makes about 3 1/2 dozen cookies