Make the Dough
Using a mixer, beat butter and sugar at medium-high speed until fluffy, about 3 minutes.
Add in the egg and vanilla and beat until blended.
Add flour and baking powder to the butter mixture. Stir until incorporated.
Assemble the Cookies
Place ½ cup of dough in a small bowl and set aside.
Place ⅓ of the remaining dough into a bowl, add 2-3 drops of orange food coloring. Mix the food coloring into the cookie dough until all of the dough is orange. Set aside.
Place the remaining ⅔ of the dough into a bowl, and add 2-3 drops of yellow food coloring. Mix the food coloring into the cookie dough until all of the dough is yellow. Set aside.
Place a large sheet of parchment paper on your counter.
Take half of the yellow dough and press it out into a long, skinny rectangle on the parchment paper. Try to keep this layer even as best you can.
Take half of the orange dough and gently press it out onto the long orange rectangle you just made, keeping it as evenly distributed across the bottom layer as you can.
Take half of the plain, white dough and roll it out into a roll that’s the same length as your orange and yellow stack. Place the white dough on top of the stack of dough.
Using your hands, press the long sides of the dough together and form it into a long triangle shape. When you look at the ends of the stack of dough, you should see the candy corn shape you’re looking for.
Repeat the assembly process with the second half of each color of dough so you have 2 triangular shaped logs of dough.
Wrap each piece of dough in parchment paper and refrigerate for at least 2 hours. (I often leave mine overnight.)
Bake the Cookies
When you’re ready to bake, heat the oven to 350 degrees.
Place the dough on a cutting board and using a sharp knife, cut into slices aprox ¼ inch thick.
Place dough about 1 inch apart on an ungreased cookie sheet. These cookies will puff and spread a little bit, but not significantly.
Bake for 8-10 minutes or until cookies are set, but not brown.
Remove from cookie sheet. Cool on wire rack.