The Birthday Cake Halo Top does taste a lot like yellow cake with super sweet frosting. While it satisfies, it proves to be a bit much in large doses. This is one flavor where you can taste the stevia more than you’d like to. Also, the sprinkles. You ever take fistful of sprinkles to the face? It’s not the best flavor, but you taste it an awful lot here. Imagine dumping a healthy pour of sprinkles into a vanilla protein shake, then freezing it, then crying because all you want is a slice of cake.