Melt butter and allow to cool.
In a mixing bowl with the paddle attachment, beat eggs and sugar until light yellow. 2-3 minutes on medium high speed.
3 Egg, 1 Cup Sugar
Add melted butter and salt, stir until combined.
pinch Salt, ½ Cup Butter
In a separate bowl, sift together the flour, cocoa powder and the baking powder.
1 ¾ Cup Flour, All Purpose, ¼ Cup cocoa powder, 2 Teaspoons Baking Powder
Fold the dry ingredients into the wet ingredients until just blended. Do not over mix.