To prepare a the easiest chocolate pudding cake recipe, first you need to prepare your ingredients. First, you will need your chocolate cake mix. You can find it at your local grocery store, or you can buy it online. Then, add your flour, baking powder, cocoa, sugar, and salt to your mixing bowl and mix them together until they are well combined. Next, pour your batter into your cake pan and bake it in the oven for 35 to 40 minutes or until the cake springs back when you touch it.