These were the tasty result of an RS cookie swap a few years ago - I've made them every year since. Thanks Tori!
2 10-oz jars of Maraschino cherries
1 1/2 cups flour
1/2 cup unsweetened cocoa
1/4 teaspoon salt
1/2 teaspoon baking powder
1/2 cup butter, softened
1 cup sugar
1 1/2 teaspoon vanilla
1 cup semisweet chocolate chips
2 Tablespoons milk
Drain cherries, reserving juice. Combine flour, cocoa, salt, and baking powder in a large bowl. Mix well. Put butter and sugar in a medium bowl. Beat with an electric mixer for 3-4 minutes. Add egg and vanilla; mix well. Add flour mixture; mix well.
Put chocolate chips and milk in a small saucepan and heat, stirring constantly, on low heat until chocolate melts. Add reserved cherry juice to taste (I use 1-2 teaspoons). Let cool slightly.
Shape dough into 1" balls. Place on ungreased baking pan. Push in centers with thumb or bottom of a teaspoon, then spoon 1 teaspoon of the chocolate mixture into each thumbprint and top with a cherry. Bake at 350 for 10-12 minutes. Don't overcook or they will become hard and not as tasty. Let cool on wire racks.