Preheat the oven to 350°F and lightly grease a doughnut pan with butter.
Whisk together the ½ Cup Lake Champlain Chocolates® 100% Unsweetened Cocoa Powder with the rest of the dry ingredients and then add the chopped 1 Cup Lake Champlain Chocolates® 57% Dark Chocolate Bar, all in a large bowl.
In a separate bowl, whisk together the eggs, yogurt, and milk.
Add the wet ingredients to the dry ingredients, stirring just until blended. Do not over mix.
Spoon the batter into the prepared pan, filling each cavity ⅔ to ¾ full.
Bake for 10 to 12 minutes, until a cake tester comes out clean.
Remove from oven, let sit briefly, then gently turn out of pan onto a rack. Cool completely, and place a baking sheet under the rack before glazing to catch any drips.
In a double boiler over med-high heat, warm the milk until it is hot, but not boiling. Remove from heat and add the confectioner's (or maple) sugar, salt, and 1 tsp Prova Gourmet Madagascar Bourbon Vanilla Extract. Whisk until smooth and immediately pour over cooled donuts.Enjoy!