In small bowl, place half of the frosting. Tint red with food color. Place large piping bag fitted with medium star tip on its side. Using large icing spatula, spoon remaining vanilla frosting so it covers half of the length of side of piping bag. Carefully spoon red tinted frosting on top. Insert tip into indentation in each cookie cup. Squeeze bag to fill opening, and pipe about 2 heaping teaspoons per cookie cup. Sprinkle with remaining 2 teaspoons sprinkles. Store loosely covered at room temperature.