– 113g or ½ cup unsalted butter cold is fine (if using salted butter halve the amount of salt below) – 150g or ¾ cup brown sugar light or dark – 50g or ¼ cup granulated sugar – 1 large egg – 1 tsp baking soda – 55g or ¼ cup peanut butter chunky or creamy - use a conventional brand that doesn’t need to be stirred – 35 g or ⅓ cup dutch process cocoa – 95 g or ¾ cup all purpose flour – 130 gor 1 cup old fashioned rolled oats plus more for topping – ½ tsp fine sea salt – 1 tsp pure vanilla extract – ½ cup chopped peanut butter cups or chocolate chips plus more for topping – ½ cup chocolate covered candies plus more for topping