Cream the Butter and Peanut Butter: Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper or silicone baking mats. In a large mixing bowl, use an electric hand mixer or stand mixer fitted with the paddle attachment to beat the softened butter and peanut butter together on medium speed until smooth and creamy (about 1-2 minutes).
3/4 cup (188g) natural peanut butter (only ingredients should be roasted peanuts and salt), 1/2 cup 1 stick; (113g) unsalted butter
Add Sugars and Vanilla: Add the brown sugar, white sugar, and vanilla extract. Beat on medium speed until the mixture is light and fluffy (2-3 minutes).
2 teaspoons vanilla, 2/3 cup (133 g) brown sugar, 1/3 cup (67 g) white sugar
Mix in Egg: Add the egg and beat on low speed until just combined.
1 large egg
Mix Dry Ingredients: In a separate bowl, whisk together the flour, cornstarch, baking soda, and salt.
1 1/2 (195 g) cups flour, 2 teaspoons cornstarch, 1/2 teaspoons baking soda, 1/2 teaspoon salt
Combine Wet & Dry Ingredients: Gradually add the dry ingredients to the wet mixture, mixing on low speed until a soft dough forms.
Form the Dough: Use a cookie scoop or spoon to portion out 1.7 tablespoons of dough (approximately 26 cookies). Roll each portion into a ball.
Coat in Sugar: Roll each dough ball in one of the following sugars: granulated white sugar, red sanding sugar, or green sanding sugar. For a festive red, green, and white color scheme, roll about 8-9 dough balls in each color.
granulated sugar, for rolling, red & white sanding sugar, for rolling
Bake: Place the sugar-coated dough balls on the prepared baking sheets, spacing them about 2 inches apart. Bake for 10-12 minutes, or until the tops begin to crack.
Add Hershey’s Kiss: Remove the cookies from the oven and immediately press a Hershey's Kiss into the center of each cookie. The cookies will crack slightly around the edges—this is normal!
26 unwrapped Hershey kisses
Cool: Let the cookies cool on the baking sheet for 5 minutes, then transfer them to a wire rack to cool completely. Allow the chocolate to set before serving or storing.