Preheat oven to 350°F
Line an 8" x 8" square cake pan with parchment paper
In a large bowl, whisk together sugar, cocoa powder, flour, instant coffee (if using), baking powder and salt.
Stir in eggs and vanilla extract
Pour in cooled melted butter. Stir until combined. Batter will be thick.
Pan bottom of cake pan with the peppermint patties.
Evenly spread the batter over the patties in the pan
Bake 20-22 minutes or until centre of brownies are cooked and sides begin to pull away from the pan
Cool in pan for 5 minutes before lifting the brownies out of the pan using the parchment paper to lift.
Cut into 9 squares and serve warm.
