Make sure to line the bottom of the cake pan with parchment paper and spray with nonstick cooking spray. After removing the cake from the oven, allow it to cool for a few minutes to allow the cake to release from the pan. Carefully run a butter knife around the edges of the cake to loosen it and gently invert the pan to release the cake onto a flat surface. Peel off the parchment paper from the bottom of the cake and flip it the right side up onto a wire rack to cool completely.