Pour peanut butter mixture into the bowl and stir everything until all nuts are well coated and protein powder is mixed in. (healingcuisinebyelise.com)
Combine dry ingredients and then gradually stir into butter mixture with a wooden spoon. (beantownbaker.com)
Pour peanut butter mixture over powdered sugar in a large mixing bowl or the bowl of a stand mixer fitted with the paddle attachment. (savoryexperiments.com)