In a large mixing bowl, whisk flour, baking soda and salt and set aside
In the bowl of a stand mixer with the paddle attachment, combine sugars and butter and mix until fluffy, scraping sides of the bowl as needed
Add egg, vanilla and milk and mix well
Stir in peanut butter and mix until well combined
Combine flour mixture into the wet ingredients, and stir until just combined
Using a cookie scoop, remove cookie dough and shape into 1-inch cookie dough balls and roll in sugar
Place on an ungreased baking sheet and bake at 375 for about 10-12 minutes.
Remove from the oven place on a wire rack and cool for a couple of minutes and top each with a kiss. If you add the kiss while cookie is still hot, it will melt