Black Walnut Cookies

1 cup butter or margarine
1 cup dark brown sugar
1 large egg
1/2 teaspoon baking soda
1 teaspoon maple flavoring
2 cups all-purpose flour
1 teaspoon baking powder
1 1/2 cups chopped black walnuts

Beat together butter and sugar until creamy. Beat in egg and add maple flavoring. Add in flour and baking soda, then add baking powder dissovled in a couple drops of water. Add nuts and mix well. Divide dough into thirds and roll into logs. Refrigerate until firm (about 1 hour.) Preheat oven to 400 degrees F (205 degrees C). Slice logs into thin cookies. Bake for 9 minutes or until light brown in color.

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