Preheat the oven to 350°F (176.7°C)
To make your amazing too much chocolate cake, begin by first adding the butter into mixing bowl. Beat the butter on high with an electric mixer. When the butter is a creamy texture, add in sugar and eggs, then mix.
Next, turn the mixer off, and add into the mixing bowl all-purpose flour, baking powder, baking soda, salt, vanilla, milk, sour cream, instant chocolate pudding, and chocolate syrup. Begin mixing on low, then slowly increase the speed of the mixer until it the mixture is completely combined, and no lumps remain.
Take a bunt pan, and spray it thoroughly with cooking spray. Make sure you cover anyplace that the cake batter is going to touch. After it is greased, you can lightly flour the inside of the pan to help prevent the cake from sticking. Dump any remaining flour out of the pan.
Pour the chocolate cake batter into the bunt pan, and smooth it so that it is level throughout the entire pan.
Place into the preheated oven and bake for approximately 50 minutes or until a toothpick insert it into the center of the cake comes out clean. When finished baking, remove it from the oven and allow it to cool for 15 minutes. Then flip the cake over and allow it to continue cooling on a wire rack until it has reached room temperature.