Hi I’m making a Betty Crocker French vanilla cake  I bought 2 boxes adding 5 more ounces to make 18,25  oz of cake mix ! How mama y eggs do I use .. how much water or milk do I use and how much oil or butter do I use please? Thank anyone that can help me . Going to use to make cupcakes for my great grandson birthday coming up

CARMIJOK  can u help me please 

Treat the altered /enlarged mix as if it were original.  Use 2 whole eggs; 1& 1/3 cup liquid .  I do not use any oil in my cakes but if you insist use whatever the box says to.    Forget it’s changed.  

I always use betty Crocker and add an extra egg (four all together) I've found water to do better than milk, and I just use oil, but many people swear over melted butter, same amount. 
Let us know what you did!