@Maison Rustique Thank you, thank you, thank you!!! That is the recipe.
Edited to add:
As is my habit, I have captured the recipe as a Word document and formatted it the way I like to read recipes.
I have changed up the instructions a bit. I can't imagine trying to incorparate the chocolate into the toffee mixture in the jelly roll pan ( I will use a 1/2 sheet baker's pan). I will use a larger oven-proof saucepan, do the baking in that, then add the chocolate to the saucepan, finally pouring the final mixture into the jelly roll pan. @Kerry Beal Do you see any folly in this?