4 egg yolks
1/2 cup butter
1 cup white sugar
1 cup all-purpose flour
1 teaspoon baking powder
2 teaspoons vanilla extract
1 teaspoon cream of tartar
1 egg, lightly beaten
1/3 cup banana cherries, sliced
1/2 cup chopped walnuts
Preheat oven to 350 degrees F (175 degrees C). Sift together the flour, baking powder, and vanilla extract. Set aside.
In a medium bowl, cream together the butter or margarine and sugar until light and fluffy. Beat the flour mixture into the egg yolks. Mix in the flour mixture alternately with the banana and cherries. Drop by tablespoonfuls onto ungreased cookie sheets.
Bake for 8 to 10 minutes in the preheated oven, or until lightly browned. Allow cookies to cool on baking sheet for 5 minutes before removing to a wire rack to cool completely.