1. In small bowl, whisk together flour, baking powder, and salt. Set aside.
2. In mixing bowl, beat butter and sugar together until light and fluffy.
3. Add egg, and milk; beat until well mixed. Add the flour mixture and stir to form a dough. (If dough is dry, add 1-3 teaspoons additional milk.)
4. Divide dough in half. Add the melted chocolate to one half of the dough and mix together. Gently knead chocolate dough by hand to thoroughly combine.
5. Between sheets of wax paper, roll each piece of dough into a 12” x 9” rectangle. Place the chocolate dough on top of the plain dough. Roll up, beginning with 12-inch side. Wrap in wax paper and chill 15 minutes.
6. Preheat oven to 350°F. With a sharp knife, cut roll into 1/3” slices. Place each slice about 1 inch apart on ungreased or parchment-lined baking sheet.
7. Bake 10-12 minutes or until slightly browned. Remove from baking sheet; cool on rack.
Nutrition Facts
One cookie provides approximately 68 calories; 1 g protein; 9 g carbohydrates; .28 g dietary fiber; 3 g fat (2 g saturated); 12 mg cholesterol; 10 mcg folate; .37mg iron and 51 mg sodium.