<<Disclaimer: Verify this information before applying it to your situation.>>

The muffin batter should be thick (like pancake batter) not thin.  Since
different flours have different consistencies, add a few teaspoons more
until it is like thick pancake batter.  I had cinamin muffins tonight as
a treat!  If anyone encounters problems with this recipe just let me
know and I'll try to figure out what is going wrong.  Sally