Preheat oven to 350 degrees Farenheit. Set aside two cookie sheets (non-stick or lined with parchment). In a medium bowl combine the dry ingredients (flour, baking soda, corn starch, and salt). Set aside.

In a large bowl, whisk together the butter, peanut butter, and sugar ingredients. Add the egg and vanilla extract to the bowl and stir to combine. Fold the dry ingredients into the bowl of wet ingredients; do not over mix. Transfer the dough to the refrigerator and let chill for at least 30 minutes (optional).

Once your dough is formed, using a cookie scoop (or your hands) roll into balls 1" diameter. Place on a cookie sheet leaving about 2" apart. Bake for 10-12 minutes or once cooked in the middle. Remove from the oven.

Gently press the Hershey kisses in the middle of each cookie. After a few minutes of cooling transfer to a cooling rack. Top with a salted pretzel (optional).