If youve never tried Nutella you are missing out on something AMAZING!! Its just this chocolatey goodness that is great on toast, fruit, dessert or just a spoon! Anytime I find a recipe using Nutella I always try it and this one did not disappoint! Enjoy! Nutella Gooey Butter Cake Adapted from: The Plain Chicken   Cake: 1 (18 1/4-ounce) package Duncan Hines Dark Chocolate Fudge Cake Mix 1 egg 8 tablespoons butter, melted   Filling: 1 (8-ounce) package cream cheese, softened 1 cup Nutella 3 eggs 1 teaspoon vanilla 1 (16-ounce) box powdered sugar   Preheat oven to 325 ?F. Combine the cake mix, egg, and butter and mix well with an electric mixer. Pat the mixture into the bottom of a lightly greased 13 by 9-inch baking pan.   To make the filling: In a large bowl, beat the cream cheese and Nutella until smooth. Add the eggs and vanilla and beat together. Next, add the powdered sugar and mix well. Spread Nutella mixture over cake batter and bake for 40 to 50 minutes. Make sure not to overbake as the center should be a little gooey. Dust with some additional powdered sugar once it is cooled!