2 cups flour
1 teaspoon baking powder
1/4 teaspoon salt
1/2 teaspoon baking soda
1/2 cup butter
2-1/2 ounces unsweetened chocolate
2 medium size eggs
2 teaspoons vanilla extract
1-1/2 cups sugar
1/2 cup sour cream
1-1/2 cups semisweet chocolate chips
1 cup chopped walnuts

In a medium-size bowl, combine flour, baking powder, baking soda and salt. Using a wire whisk, mix dry ingredients thoroughly; set aside. combine butter and chocolate in a medium-sized saucepan over medium-low heat; stir constantly until completely melted. With an electric mixer, beat eggs, vanilla and sugar until well blended. Add chocolate and butter mixture. Add dry ingredients, 1/3 at a time, alternating with sour cream, mixing well after each addition. Stir in chocolate chips and walnuts. Drop by tablespoons about 2 inches apart onto ungreased cookie sheets. Bake at 375 for 12-14 minutes. Transfer from hot baking sheet onto a cool surface.