Makes about 4 dozen cookies.
1 1/4 cups all-purpose flour
3/4 cups granulated sugar
1/2 cup butter, softened
1 small egg
3/4 teaspoon baking powder
1/2 teaspoon vanilla extract
1/4 teaspoon salt
1/2 teaspoon milk
1 teaspoon lemon extract
1/4 teaspoon yellow food coloring
Beat first 8 ingredients (flour through milk) for 3-5 minutes. Divide dough into 2 equal portions. On wax paper covered with confectioners' sugar, roll one portion into 12 x 6-inch rectangle. (Lightly sugar rolling pin to avoid sticking.)
Into other dough portion, mix lemon extract and yellow food coloring. Once completely mixed, roll into 12 x 6-inch rectangle on another sheet of wax paper. Lay lemon rectangle on top of plain rectangle. Remove wax paper from top.
Gently roll dough jellyroll fashion, being sure to remove wax paper as you go. Wrap and refrigerate until firm (3-4 hours).
Cut rolls into 1/4-inch slices. Place on cookie sheets coated with cooking spray. Bake at 350 degrees F for 12-15 minutes.