To make Christmas Lights Lofthouse Cookies, start by creaming together your butter, sugar and shortening until light and fluffy. Add in the vanilla and almond extract. Mix in the egg and egg white until well combined.
In a small mixing bowl, combine cake flour, all purpose flour, baking powder, salt and cream of tarter. Gradually add the dry ingredients to the wet ingredients and mix until combined.
Cover with plastic wrap and move to chill in the refrigerator for 1 hour. Once chilled, remove and preheat oven to 375 degrees.
Line a baking sheet with parchment paper and set aside. Using a cookie scoop or a large spoon, scoop up cookie dough and roll into a 2 inch ball.
Lightly roll your cookie ball through a bowl of all purpose flour, making sure the entire ball is lightly coated in the flour.
Move the cookie ball to your baking sheet and using the bottom of a glass or any other flat surface, press the ball flat so that it is about only about 1/4 inch thick. Place in oven and bake for 10 – 12 minutes. Remove from the oven and let cool for 1 minute before moving the cookies to a cooling rack.
Once your Christmas Lights Lofthouse Cookies are completely cooled, make your royal icing. In a small bowl, add your sifted powdered sugar and lemon juice and whisk to combine. Crack an egg and add the egg white to a small bowl and lightly whisk it to loosen it up, then scoop out 2 tablespoons of egg white and add them to your powdered sugar.
Whisk everything together. It will be very thick, keep whisking and it will loosen up as the sugar melts.
Spoon a small amount of royal icing onto each cookie and using the back of a spoon, spread it evenly almost to the edges of your cookies.
Let the royal icing harden completely on the cookies before moving forward. By the time I frosted my last cookie, my first cookie was almost set. I gave it another 5 minutes and they were hard.
Pipe thin black lines onto each cookie and then press the mini M&Ms sideways.. don't forget to pick out the brown M&Ms :)