Directions : <ol> <li>Start with the filling. Mix 1 1/2 cups milk and pudding mix in a pan. Cook, following the directions on the package, then add chocolate chips and stir to melt them.</li> <li>Preheat your oven to 350°F. Take a 10-inch Bundt or tube pan and wipe around with grease and flour.</li> <li>Now it's time to make the cake batter. Mix white sugar, butter, and shortening in a bowl and beat until you get a light and fluffy texture. Add vanilla and eggs and mix again.</li> <li>Combine flour, 1/2 cup cocoa, baking powder, salt, and 1 cup milk in a bowl. Beat on low speed until moistened, and then beat again on medium for three minutes. Add the walnuts and stir.</li> <li>Reserve 2 cups of the batter and pour the rest into the greased pan. Spoon the filling in a ring on top of the batter, but make sure it's not touching the sides of the pan. Now, pour the reserved batter over the filling.</li> <li>Bake in the preheated oven for about 50-60 minutes. The cake is ready once you touch it lightly in the center, and it springs back. Let cool in the pan for an hour, and then turn out onto a wire rack to let cool completely.</li> <li>For the glaze, mix confectioners' sugar and the remaining 1/4 cup cocoa. Add some milk until you get that drizzling consistency. Then, pour the glaze over the cake, letting it run down the sides. Your masterpiece is ready to serve!</li> </ol>