Prepare and measure all of your ingredients. Line the bottom of three 4-1/2-inch round cake pans with parchment paper, anchoring them with a little oil. (I used springform pans.) Spray the inside of the pan with oil; set aside. Preheat the oven to 350°F.
In a small bowl, whisk together the flour blend, cinnamon, and salt; set aside.
In the bowl of your mixer, beat the egg 1 minute on high speed or until quite foamy.
*Scant = a little less than.