Coat a large, rimmed baking sheet with cooking spray and set aside.

In a large bowl, toss together bran flakes and coconut flakes and set aside.

In a large saucepan, melt the butter over low heat. Add marshmallows and vanilla, stirring constantly until the marshmallows are completely melted. Gently stir in the cereal and coconut until even-coated with marshmallow. Transfer the cereal to the prepared baking sheet and press it firmly into an even layer.

Once the cereal is completely cooled, cut into squares or irregular pieces - up to you!

In a double boiler, melt the chocolate wafers. Stir in the coffee granules. While the chocolate is still hot, dip about half of each cereal square or piece into the chocolate, then place on wax paper to cool. Once the chocolate has cooled and hardened, store in an airtight container.