INGREDIENTS
1/2 cup
unsalted butter (1 stick), melted
1
large egg
1 cup
light brown sugar, packed
2 tbsp
brewed coffee, any temperature, optional but recommended (leftover from the morning brew is fine)
1 tbsp
vanilla extract
1/2 tsp
peppermint extract or mint extract (do not use peppermint oil)
1/2 cup
unsweetened natural cocoa powder (Dutch-process may be substituted)
1/2 cup
all-purpose flour
25
Mint Oreos, each quartered; divided use (another variety of chocolate sandwich cookies may be substituted such as classic Oreos or storebrand sandwich cookies, noting bars won’t taste as minty without using mint cookies)