It's worth trying with agave! I'm sure if you subbed it cup for cup it would turn out just like it would using corn syrup would. Never hurts to experiment. From my understanding, peanut brittle starts out with a hard candy base. Only difference is the addition of baking soda.
I grew up making hard candy when I was younger. My father is a diabetic and I have been wondering for years as to how I can make this treat for him sugar free. Yesterday the idea hit me to use agave syrup. It's low glycemic and has a thick syrup texture just like corn syrup does. So! Tonight I...