Preheat the oven to 350°F. Line the cookie sheets with a silicone baking mat or parchment paper.
Beat butter, peanut butter, brown sugar, egg, and vanilla extract together until completely combined. Add in almond flour, baking powder, and salt. Stir to combine.
Scoop the dough then roll them into balls. Roll the dough balls in sugar if desired then place them on the prepared cookie sheet. Gently press a Hershey's kiss into each dough ball.
Bake for 10-13 minutes. Let cool on the cookie sheet for 10 minutes before transferring them to a cooling rack.
Store leftovers in an airtight container at room temperature for up to 4 days.