A classic cookie! A fudgy brownie-like cookie rolled in powdered sugar.
Melt butter and chocolate in 1-quart saucepan over low heat, stirring occasionally, until smooth (8 to 10 minutes). Cool completely (30 minutes).
Combine melted chocolate mixture, 1 cup
flour, sugar, eggs, baking powder and salt in large bowl. Beat at medium speed, scraping bowl often, until well mixed. Stir in remaining flour and nuts. Cover; refrigerate (2 hours).
Heat oven to 300°F.
Shape dough into 1 1/2-inch balls. Roll in powdered sugar. Place 2 inches apart onto greased cookie sheets. Bake for 15 to 18 minutes or until set.