• Preheat oven to 180C | 350F
• Spray an 8x8-inch baking pan with cooking oil spray, wipe excess over with paper towel, and set aside
• Combine flour, cocoa powder, coffee powder and salt in a large bowl. Mix well and set aside.
• In a separate medium-sized bowl, whisk together the butter/oil, brown sugar, sweetener/sugar and vanilla. Add eggs and whisk again until light and creamy.
• Pour the liquid mix into the dry ingredients, and mix with a spoon until just combined (do not overheat the batter)
• Set Brownie Batter aside to create your pb filling

Peanut Butter Filling:

• Combine all peanut butter filling ingredients into a bowl and whisk until smooth and creamy.
• Evenly spread 1/2 of the brownie batter into prepared pan. Spoon the peanut butter filling over the top and even it out to the edges of the pan. Pour the remaining brownie batter over the top and smooth it over the peanut butter filling. (At this point, it's ok if some of the pb mixes in with the brownie batter. Mine created a little swirl over the top)
• Bake for about 25 - 30 minutes (depending on your oven) until set to the touch. Insert a toothpick into the centre of the brownies, and it should come out a little dirty (nice and fudgy)
• Sprinkle the chocolate and reese's chips over the top and allow brownies to cool before cutting into 16 bars!