To prepare a cristinas tunnel of fudge cake baked goods recipe, first you need to prepare the ingredients for the cake. First, you'll need the following ingredients: 1 8-ounce jar of marshmallow creme pie filling 1 cup of chocolate chips 1 teaspoon of vanilla extract 1 tablespoon of butter (or margarine) 2 tablespoons of powdered sugar 2 cups of confectioners sugar Instructions: Preheat the oven to 350 degrees F. Grease and flour two 9-inch springform pans and set aside. Beat the butter and sugar with an electric mixer until light and fluffy, about 2 minutes. Add the eggs and vanilla and beat until combined. Pour the dry ingredients into the wet ingredients and mix until the batter resembles coarse crumbs. Gradually stir in the flour mixture, scraping down the sides of the bowl as needed to keep the mixture from sticking to the pan. Bake the cakes for 35 to 40 minutes, or until toothpick inserted in center comes out clean. Allow to cool before cutting into squares.