Preheat oven to 375 degrees.

Cream butter; slowly add in powder sugar. Blend in egg yolk and vanilla.

Combine dry ingredients. Blend well into butter mixture. Stir in coconut and chocolate chips.

Shape into walnut-sized balls and place on ungreased cookie sheets. Flatten slightly with the bottom of a glass that has been dipped in sugar.

Bake 12 minutes.

Notes: Interesting crumbly texture.

Very easy.
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