Whisk together flour, cocoa powder, baking powder, salt, granulated sugar, & brown sugar.
In a separate small bowl, whisk eggs with milk, vanilla, & melted butter.
Gently stir wet ingredients into dry ingredients until just combined. Add crushed mini eggs.
And gently fold them into the batter, taking care not to over-mix.
Fill each cavity of lightly oiled donut pan almost all the way with batter.
Bake for 9-11 mins, until doughnuts are light & springy to the touch. Let cool completely.
Whisk together confectioners' sugar, salt, softened butter, milk, & vanilla until smooth.
Dunk donuts into icing & top with crushed Mini Eggs. Let donuts rest for 30 mins.