Recipe(tried): Rainbow Cookies

I think this is the recipe you were looking for last year.

RAINBOW COOKIES

3/4 cup butter
1/2 cup sifted granulated sugar
1/2 cup sifted confectioners' sugar
1 egg
1 tsp. vanilla
2 1/2 cup sifted flour

Cream butter thoroughly; add sugars, a little at a time, then egg. Beat well until very light. Add vanilla. Last, add flour, a small amount at a time. Dough should not be sticky or heavy.

Divide dough into 3 portions. Add yellow coloring to noe part, green to one part and red to one part. Work colorings into dough till no white streaks show.

Use 1/4 Cup of each dough. Roll out each portion of dough between 2 pieces of wax paper. Put the 3 doughs together. Cut off uneven parts and roll from the long end till it resembles a tube. Wrap tightly in wax paper and refrigerate till firm.

When roll is firm, cut into 1/4- inch slices. Place on lightly greased baking sheet about 1- inch apart.

Bake 325 degrees F 15 minutes; then shut off heat and allow cookies to remain in oven, with door slightly ajar for 10 minutes more. Watch closely at end, as they lose their color if overbaked.