Scoop peanut butter into 20 ball-shaped portions & freeze for 30min.
Preheat oven to 325°F.
Combine together butter, black sesame paste, white sesame paste, & sugar in a stand mixer or bowl using a hand mixer for 10min until fluffy. Add 3 room temperature eggs, one at a time, & mix for 5 minutes until smooth.
In a separate bowl, combine flour, salt, baking powder, & baking soda.
Add dry ingredients in with the wet ingredients & fold by hand until mixture is combined, leaving no traces of flour.
Portion dough into 20 balls. Stuff one frozen peanut butter ball into the centre of the cookie.
Bake in the preheated oven for 13-15min.
