Preheat oven to 325°F. Microwave semi-sweet and unsweetened chocolates and butter in large microwavable bowl on HIGH 2 to 3 minutes or until butter is melted, stirring after 2 minutes. Stir until chocolate is completely melted. Cool to room temperature.
Beat eggs and granulated sugar in large bowl with electric mixer on medium speed until well blended. Add chocolate mixture and vanilla; mix well. Blend in flour, baking powder and salt. Add white chocolate chunks and walnuts; mix well. Drop heaping tablespoonfuls of dough, 2 inches apart, on greased baking sheets.
Bake 10 minutes or until cookies are slightly cracked but still moist. Cool 2 minutes; remove from baking sheets. Cool completely on wire racks. Sprinkle evenly with powdered sugar.
How to Portion Cookie Dough
Use a small spring-handled ice cream scoop to evenly portion the cookie dough.
Calories From Fat
% Daily Value*
Total Fat 9g
Saturated Fat 3.5g
Trans Fat 0g
Total Carbohydrates 13g
Dietary Fiber 1g
* Percent Daily Values are based on a 2,000 calorie diet.
Makes about 4 dozen cookies or 48 servings, 1 cookie each.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.