Method
1. Pre-heat oven - 175°C / 350°F
2. Add unsalted butter, peanut butter, sugar, brown sugar, egg and vanilla extract to a clean stand mixer bowl
3. Beat until fluffy - medium speed
4. Add all purpose flour, baking powder, baking soda and salt
5. Beat slowly until combined - low speed
6. Roll into 1 inch balls and move them to the baking sheet
7. Bake - 10 min, 175°C / 350°F
8. Immediately press Hershey's kiss into center of cookie and cool down