Preheat the oven to 350. First let's make the dough. Add the dry ingredients to a food processor and pulse until well mixed.
Next, add in the butter and pulse, then mix on low until a dough starts to form. You want to ensure the butter is well mixed and evenly dispersed. Any pockets of butter will make the dough difficult to work with, and it will not bake properly.
Turn the dough out onto a parchment paper lined cookie sheet and knead it together until it holds all together. Divide the dough into ⅔ and ⅓. The ⅓ portion will get divided and dyed to create the colorful fall leaves. The ⅔ dough will remain plain and will create the actual cookie.
Dye your dough according to your preference. I find it best to use gel food dye so it doesn't affect the dough texture.
Roll each dough portion into a disk shape, about ½ cm thick. You don't want the dough too thin as it because more difficult to work with the thinner it becomes. Making the dough too thick creates a more tender cookie and will result in fewer cookies. However, always err on the side of thicker dough for ease of use.
When the plain dough has been rolled out, use a circular cookie cutter to cut out the cookie shape. Then, in a pattern you prefer, begin to cut out the intricate leaf pattern on each individual cookie. Remove the cut out leaf shape from the cookie. This left over dough will be re-rolled later to make more cookies.
From your color dough, cut out corresponding leaf shapes and replace the shape that has been removed from the plain cookie dough. Think of it as a puzzle! Continue this until each cookie has a pattern you like and all cookies are complete.
Individually scrape up the dough scraps and reform a disk with each color of dough and continue to create cookies until all dough has been used.
Using a spatula or offset spatula, carefully transfer the cookies to a parchment paper lined cookie sheet and bake for 11-12 minutes.