Is the ultimate result of the recipe dependent on the taste of coffee? I might add as least a few sprinkles of crunchy instant coffee or espresso. I don’t know if they still make it. If you can find an affordable chocolate bar with espresso, might try chopping up that.
[Edited to add: I was thinking of freeze-dried coffee.)
Might work to roll softened chips in instant coffee powder and ground nibs, like teeny truffles.
Also, you might get best answers if you linked or summarized the recipe, so people have an idea of whether the espresso beans are a topping or a mixed-in ingredient.