Preheat oven to 350 degrees fahrenheit.
Sift the flours and place in a large bowl. Add salt, cornstarch, and baking soda whisking until combined. Set aside.
In a large bowl with a hand mixer or stand mixer, mix white granulated sugar, brown sugar and butter until fluffy and combined.
Halfway through mixing, add vanilla and egg. Once the mixture is smooth and creamy set aside.
Then, combine the dry ingredients with the "wet ingredients" (butter, egg, vanilla sugar mixture) mixing an additional 30 seconds to one minute. Be careful not to overmix.
Add your holiday themed candies and using a spatula, fold until combined being careful not to overmix. It's important to note at this step the cookie dough should be chilled for at least thirty minutes.
On a lined baking sheet place scooped cookie dough onto tray. Measure about a tablespoon and a half of dough or use a small ice cream scoop and place each ball about three inches a part on the baking sheet.
Next, place the cookies in the oven at 350 degrees for 12-14 minutes depending on oven being careful to not overbake the cookies. The cookies should be slightly brown around the edges and soft to touch in the middle.
After baking, place cookies on a cooling rack using a spatula.
Using extra holiday themed candies, place a few candies on each cookies while they are soft for additional decoration. Allow to cool for at least ten minutes and enjoy!