This festive “cookie” is really a cake. Like many classic petit fours, Neapolitans are thin layers of rich butter cake sandwiched with jam. Almond paste in the batter keeps the cake moist for a week or more at room temperature, a month or more when frozen.
Don’t be daunted by what appears to be a complicated cake. Now that smaller baking sheets (9 x 13 inches) are available, it’s easy to make uniform shaped layers. Divide the work into two stages. Make the cakes and layer them on one day. Ice and cut them another. A rich chocolate coating is traditional in bakeries where these Rainbow Cookies are sold. Chocolate fudge icing would also work well.
Traditional during the end of year holidays, we like to serve these at special occasions year round.
Here’s our Rainbow Cookie recipe.