Sift together flour, baking powder and salt. Set aside.
In a stand mixer (hand mixer works find too), mix butter until light in color. Add sugar, egg, and milk, vanilla and lemon zest. Beat to combine.
On low speed, gradually add in flour mixture until just combined.
Using floured hands, divide dough into quarters.
Take Â¼ and place back into mixing bowl. Add food coloring and mix to combine.
*Note-start with a small amount of coloring at first. Also, when color was mostly mixed, I took it out and kneaded it until all color was mixed through.
Repeat with the rest of dough. Make sure to clean the paddle and bowl after each color, so you don't mix the colors together.
When desired color is done, wrap each in plastic wrap and refrigerate for 1 hr.
Break pieces off of each colored dough and place them next to each other, creating a â??patchworkâ?? of color.
Using a floured rolling pin, roll dough to Â¼ in thick.
Cut leaf shapes with a leaf cookie-cutter and place on baking sheet.
Use a toothpick to outline leaf-veins and sprinkle sugar on top for sparkle.
Bake at 375 degrees Fahrenheit for 7-9 minutes until edges are just done. Allow to rest on cookie sheet for about 2 minutes and then place on wrack to cool.