What You'll Need:
For the cookies:
1/2 cup (1 stick) butter, soft
1 cup packed brown sugar
1 egg
1/2 cup sour cream
1 3/4 cup all purpose flour
1/2 tsp baking soda
1/4 tsp salt
For the frosting:
1/4 cup (half a stick) butter
1/2 cup brown sugar
2 tbsp milk
1 cup powdered sugar
How to Make It:
Preheat the oven to 375 degrees. In a medium bowl, cream the butter and brown sugar until light and fluffy. Beat in the egg and the sour cream. In another bowl, combine the flour, baking soda, and salt; gradually add the dry mixture to the creamed mixture and mix well. Drop by spoonfuls 2 inches apart on greased or sprayed baking sheets. Bake for 9-11 minutes, until golden brown. Remove the cookies to wire racks to cool. For the frosting, in a small saucepan, melt the butter over low heat; add the brown sugar. Cook and stir 2 minutes. Gradually add the milk. Bring the mixture to a boil, stirring constantly. Remove the saucepan from the heat. Stir in the powdered sugar to combine completely. Cool about 15 minutes, and frost the cooled cookies. This recipe makes about 2 dozen cookies.