Simply pour the mason jar mix into a bowl and add an egg, a 1/2 cup of butter, and 1 teaspoon of vanilla. Combine and bake at 350 degrees for 8-12 minutes. 

Contains: flour, oats, baking soda, baking powder, salt, brown sugar, white sugar, cocoa, Smarties and chocolate chips.

*May contain trace amounts of peanuts or tree nuts.