Chocolate Chip Walnut Bars

How many hearts can you see?

A big hit! Just by looking at it you can tell it's really good and what more if you have a piece in your hand. First time to make bars and I'll make again and again, changing or adding ingredients more next time.  This Chocolate Chip and Walnut Bars is dapted from my cookbook Hmmm Baking. I don't have a square baking sheet, but I managed to cut them in bars. I used bitter-sweet chocolate chips and didn't add much sugar.