Bake
Scoop batter into a cake pan and bake for 40 minutes.

After baking, insert a toothpick to ensure the cake is baked all through. If the toothpick comes out clean, it is done. If it does not, bake for a couple more minutes until the toothpick does come out clean.
Let the cake sit on the counter for 30 minutes to cool. Then, carefully turn it over on a plate and gently tap out. If needed, carefully scrape around the pan with a knife to unstick the cake.
Let it cool for another 30 minutes to an hour. The cake should be completely cooled before frosting. Otherwise, the frosting will melt and drip down the sides.