Angelagore

all purpose flour • Baking soda • Salt • butter, softened • sugar • brown sugar, firmly packed • Vanilla • large eggs • semi-sweet chocolate morsels • chopped nuts

fine-quality unsweetened chocolate, chopped • unsalted butter, softened • sifted cake flour (not self-rising; sift before measuring) • unsweetened cocoa powder (not Dutch-process) • baking soda • baking powder • salt • large eggs, at room temperature (30 minutes) • granulated sugar • packed light brown sugar • pure vanilla extract • sour cream •