In an electric mixer add flour, sugar, butter, egg, baking powder, vanilla, salt, beat 3 minutes. Line bottom of loaf pan with waxed paper. Divide in 3 equal parts and mix in: Part 1: almond extract and 5 drops red food coloring Part 2: cocoa Part 3: chopped walnuts
Preheat oven to 350 degrees. Spread each part in loaf pan one on top of the other, pink, white, and chocolate. Cover pan and refrigerate for at least 4 hours. Remove from pan and cut lengthwise in half then crosswise then cut 15 cookies from each piece. Bake for 8 to 10 minutes.
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