This rich chocolate cake is perfect for any occasion. Begin by preheating your oven to 350°F (175°C). In a bowl, mix flour, cocoa powder, sugar, and baking powder. In another bowl, combine eggs, milk, and melted butter. Gradually mix the wet ingredients into the dry ingredients until smooth. Pour the batter into a greased cake pan and bake for 30-35 minutes. Let it cool before frosting with chocolate ganache.