I am making a dairy- and gluten-free cake. What can I use to replace vegetable butter?  
We usually bake with Earth Balance Buttery Sticks in any recipe that calls for butter. They are dairy and gluten free and can be easily measured by cutting according to the scale on the side of the wrapper, just like regular dairy butter.  If a liquid product is needed, Earth Balance can be melted and will provide more flavor than simply using oil. 