Preheat the oven to 350 degrees F. In the bowl of your stand mixer, combine the Yellow Cake Mix with eggs, oil, and water.
Mix on low speed for 20 seconds. After that, increase the speed to medium; mix for another 3 minutes, scraping the sides of the bowl as necessary.
While the batter is getting ready, coat a 15×21″ baking sheet/tray with nonstick spray. Line the bottom of the pan with parchment paper and grease again.
Spread the cake batter into the prepared sheet/tray. With the help of a spreader knife, even out the batter in the tray.
Bake the cake right away in a preheated oven for approximately 12-14 minutes or until the top is golden.
But since I am making a Yule log cake, we will advance to the next step.Remove the cake from the oven. With a thin spatula loosen the edges of the cake from all sides. Dust the top with confectioner’s sugar. Take a thin (damp) kitchen towel and a fresh sheet of parchment paper. Dust them with a generous amount of confectioner’s /powdered sugar too. Lay the parchment paper first, then the towel on top of the cake.
Finally, place a wire rack on top of the kitchen towel and carefully flip over the cake onto the towel. Immediately peel the parchment paper from the flipped cake and discard it.
Dust the other side (flipped side) of the cake too with confectioner’s sugar.
Time to roll the cake. Start from one end and begin rolling the cake gently. Do not apply too much pressure. Roll with the towel and parchment paper. The towel and paper will get folded along with the cake. Roll till the end. The towel will prevent the cake from cracking.
Allow the rolled cake to rest for an hour at room temperature.
Once the cake has cooled, carefully unroll the cake along with the towel and parchment paper.
Spread the Frosting over the unrolled cooled cake. PROTIP– Layer the cake with a very thin frosting layer. We do not want to overdo the frosting because it will start to ooze out of the cake when we begin to re-roll the cake again. Once the frosting is evenly spread, it’s time to re-roll the cake again. PROTIP– Begin rolling the cake in the same direction, just like the first time you had rolled it. This time you will not roll the towel or paper inside the cake. This time, we will lift the parchment paper as we re-roll the cake.
Line a tray with a fresh parchment paper. Carefully lift and transfer the rolled cake onto that lined tray with the folded side down. Refrigerate the cake until we prepare the chocolate ganache.