Preheat oven to 375 F. Line 12 muffin cups with liners, or spray with baking spray.
In a large bowl, combine flour, sugar, cocoa powder, baking powder, and salt. Set aside.
In another bowl, combine eggs, buttermilk, melted butter, vanilla extract, and a good amount of red food colouring. Add egg mixture all at once to the flour mixture.
Stir just until moistened (batter should be lumpy.)
Spoon batter into muffin cups, filling each about ⅓ full.
Divide the filling between the muffin tins, aiming for a general tablespoon of filling in the center of each - leaving room around it.
Divide the remaining batter between the muffin cups, allowing the batter to fully encase the filling.
Finally, generously sprinkle the tops of the muffins with coarse sugar.
Bake in a 375 degree F oven for 22 to 25 minutes or until golden and a wooden toothpick inserted in centers comes out clean. (Note: Only insert it about ⅓ of the way down. If you hit cream cheese, it’ll be wet no matter how done it is!) Cool in muffin cups on a wire rack for 5 minutes, before serving