Set up an electric mixer with bowl and paddle attachment.
Mix together the butter, coconut sugar, pure vanilla extract and orange zest, until creamy.
Add the egg and mix until just incorporated.
Sprinkle in the salt.
Stop the mixer and add the Peetz S.M.A.R.T (Sorghum, Millet, Arrowroot, brown Rice, Tapioca) Blend all at once.
Mix just enough to combine.
Wrap the dough in plastic and let rest in the refrigerator, until ready to roll out and use.