Ingredients
1/2 cup butter, softened1/2 cup sugar1/2 cup confectioners’ sugar1 large egg, room temperature1/2 cup canola oil1 teaspoon vanilla extract2-1/2 cups all-purpose flour1/2 teaspoon baking soda1/2 teaspoon cream of tartar1/4 teaspoon saltAssorted food coloring
Preparation
Preheat oven to 350°. In a large bowl, cream butter and sugars until light and fluffy, 5-7 minutes. Beat in egg, oil and vanilla. In another bowl, whisk flour, baking soda, cream of tartar and salt; gradually beat into creamed mixture.
Divide dough into 5 equal portions. Tint each portion a different color with food coloring. Divide each portion into 24 equal pieces; roll each piece into a ball. Gently press together 1 ball of each color to form a larger ball; place 1 in. apart on greased baking sheets. Flatten slightly with bottom of a glass.
Bake until bottoms are lightly browned, 10-12 minutes. Remove from pans to wire racks to cool.
