Preheat oven to 350°. Line 3 cookie sheets with parchment paper.
In a large bowl, whisk together the flour, salt, baking powder, and baking soda.
In a separate large bowl, stir together the brown sugar and oil until combined.
In a measuring cup or small bowl, whisk together the 3/4 Cup Lake Champlain Chocolates® 100% Unsweetened Cocoa Powder and hot coffee until the powder is completely dissolved. Add this to the brown sugar mixture and whisk to combine. Add the egg, 1 tsp Vanilla Extractand buttermilk to the mixture and whisk until smooth.
Using a rubber spatula, fold the dry ingredients into the wet ingredients until combined.
Use a small ice cream scoop with a release mechanism to drop heaping tablespoons of the dough onto the prepared baking sheets, about 1-inch apart. You can also use a tablespoon and your fingers.
Bake for 5 minutes, rotate the trays, and bake until the cookies bounce back in the center when touched, or a toothpick comes out clean, about 3 more minutes. Let the cookies cool completely while you make the filling.