u/SavPenn98

I want to make Benjamin Delwiche's blondie recipe and his calls for a 13x9in pan, but I just realized I bought a 14.9x10in pan.

I'd still like to use this one and just make more, but are there any math whizzes here who can give me an equation or smth for increasing the ingredients?

....or just do it for me? 😅