As a rule, a CTE will NEVER improve performance. A CTE is essentially a disposable view. There are no additional statistics stored, no indexes, etc. It functions as a shorthand for a subquery. In my opinion they can be EASILY overused (I see a lot of overuse in code in my job).
Check the cupcakes at the minimum baking time. If the recommended baking time is 18-22 minutes, check them at 17 or 18 minutes (just a quick peek, make sure not to let too much heat out of the oven). If the tops are rounded and no long appear wet, they may be done.
Bake the cupcakes for 18 to 20 minutes or until a toothpick inserted into the center of the cupcake comes out looking clean. Remove from oven and place on a wire rack to cool for about 5 minutes.Carefully run a dinner knife around the edges of the cupcakes and invert the cupcake pan onto the wire rack.ake the cupcakes for 18 to 20 minutes or until a toothpick inserted into the center of the cupcake comes out looking clean. Remove from oven and place on a wire rack to cool for about 5 minutes.