Source  Mel's Kitchen Cafe

Recipe Added:  12/9/2012

Preheat oven to 350F. Line a 11x17 baking sheet with tin foil. Arrange a single layer of graham crackers in the pan without overlapping. In a small saucepan, melt butter and add the sugars. Whisk to dissolve. Let boil and simmer for 5 minutes on low. Very carefully pour mixture onto the graham crackers, working quickly with a spatula to even out the layer. Bake 10 minutes. Remove and evenly spread out the chocolate chips and leave it to melt for 5 minutes. Using spatula, spread the melted chocolate evenly. Top with chopped nuts. Let cool. Refrigerate for 2 hours. Break into pieces.

1. http://www.melskitchencafe.com/2008/01/mock-chocolate-macadamia-toffee.html