Melt butter; mix in sugar and beaten egg. Add coconut to mixture.
In a separate bowl mix flour and baking soda until well incorporated. Add flour mixture to wet mixture.
Roll dough into cylinders and wrap in plastic wrap. Chill for an hour in the freezer. before removing plastic wrap and slicing. Place slices on a cookie sheet.
To add splatters to the cookies use a small stiff bristled paint brush and rubber gloves. Pour food coloring into a dish and dip the bristles into the dye. With your finger flick the bristles so that the food coloring splatters over each cookie. Add sprinkles or other decorations as desired.
Cook in a 375 degree F oven for 10 t o 15 minutes or until golden brown.
Mix wet ingredients into dry ingredients just until incorporated. Spread in a greased glass pan. Bake at 350 degrees Fahrenheit for 25 – 30 minutes or until a toothpick comes out clean when inserted into the mixture. Cool and cut into Cookie Bars