Hello all-

I am new here, but I've used the forum before. I have been hired by my friend to make a graduation cake for her son. She's had cupcakes I've made before, based off of this recipe here, which I usually frost with a peanut butter frosting. I am looking to convert that into a sheet cake, enough to feed about 100 people. Do y'all have any tips on:

    1. How to convert the cupcake recipe into a sheet cake recipe (pan size, time, temp, etc.)

    2. How much cake to feed 100 people

and

    3. How I should come up with a price for the cake.

I greatly appreciate any help I can get.

Thanks in advance!