I just bought a 10 x 15 inch sheet pan. It gave no instructions on how much cake batter it takes to fill it properly. The last time I tried to "eyeball" an amount, the cake over rose and fell over the sides! Yikes!
Does anyone know?

Hi,
Can you double check you pan size? Is it 10x15x2 or 11x15x2?

If its an 11x15 sheet pan, then it will take 11 cups of batter for a 2" pan.

If its a 10x15 sheet pan, i would do 10 cups (1 less than 11x15) for a 2"pan

HTH

Rather than measure batter by the cupful fill it 2/3rds to 3/4s full.
That is an unusual size so I'm not sure exactly how much batter; I suggest you start w/the batter of 2 cake mixes. probably need 3 mixes or close to that. You could make up that much and make cupcakes w/any extra batter.

Thanks, guys. I thought it was an unusual size, too. I kept reading it again and again before I bought it at Party Time. I was looking for a 10 x 14, but all they had was this and a 13 x 9.