Always, toffee is buttery. Sometimes, toffee is chewy. This toffee is the former. Not the latter. No one likes caramel stuck in their molars all day. It makes you feel fat. And uncouth.
Toffee really is a cookie disguised as a bar. Want to know how I know? It's made with butter and brown sugar and vanilla and candy (Heath bar). Throw in an egg yolk and flour to hold it all together. Totally cookie dough, am I right? (Nevermind that this cookie dough is spread onto one sheetpan rather than scooped individually. Nevermind that at all.)
But at soon as this giant 9x13" cookie comes out of the oven, something happens to facilitate the transformation into toffee. That something? An unreasonable amount of chocolate chips. An amount that might make you feel fat. But never uncouth. Just go with it.
Let the chocolate melt and top it all off with more Heath bar and nuts and there it is and there you are. Perfect for gifting and for celebrating and eating.
