Hi.  I have a 12x18 pan that I need to make a vanilla cake in.  I tripled my vanilla cake recipe and it come out terrible.  Way too eggy and didn't rise much.  I tried degreasing the eggs the second time and using more baking powder but it still was not quite right.  Is there a trick when doubling or tripling recipes?  Thank you!

I have never had a problem doubling or halving a recipe.  Haven't a clue what went wrong????