You could try adding couple extra tablespoons of sweetener, but at some point it may not set up as well due to the extra liquid. (oatmealwithafork.com)
good source of vit k2, vit d, omega 3s, CLA, etc. point of this being: don't be afraid of butter, and i am looking forward to making this with a couple extra tablespoons if you think it can handle it:) (smittenkitchen.com)
I did find I like a couple extra tablespoons of lime juice in mine. (mamashire.com)