I hate making substitutions when I try a recipe for the first time, but I only had light brown sugar on hand when I made this. Not sure how much of a difference it would've made, but I still really enjoyed how it came out.
Added 2/3 cups of chocolate chips and was pleased with that amount. Still wished I'd found walnuts in time, but this was a recipe I'll use again. Not perfect, so I'll try others, but worth revisiting.