Frosted Cashew Cookies

• 1/2 cup butter (no substitutes), softened
  
• 1 cup packed brown sugar
  
• 1 egg
  
• 1/2 teaspoon vanilla extract
  
• 2 cups all-purpose flour
  
• 3/4 teaspoon baking powder
  
• 3/4 teaspoon baking soda
  
• 1/4 teaspoon salt
  
• 1/3 cup sour cream
  
• 1-3/4 cups chopped cashews
  
• FROSTING:
  
• 1/2 cup butter (no substitutes)
  
• 3 tablespoons half-and-half cream
  
• 1/4 teaspoons vanilla extract
  
• 2 cups confectioners' sugar
  
• Cashew halves, optional

In a mixing bowl, cream butter and brown sugar. Beat in egg and vanilla. Combine dry ingredients; add alternately with sour cream to creamed mixture. Stir in cashews. Drop by tablespoonfuls onto greased baking sheets. Bake at 375° for 8-10 minutes or until lightly browned. Cool on a wire rack. For frosting, lightly brown butter in a small saucepan. Remove from the heat and cool slightly. Add cream and vanilla. Beat in confectioners' sugar until smooth and thick. Frost cookies; top each with a cashew half if desired. Yield: about 5 dozen.