Preheat your oven to 350°F (175°C). This will ensure that the butter and sugars melt perfectly, creating that delightful toffee layer.
Line a lipped baking sheet with a layer of tin foil. This makes for easy cleanup and ensures that the bark won’t stick.
Arrange a single layer of graham crackers in the pan without overlapping. This step is crucial as it forms the base of your bark.
In a small saucepan, melt the butter over low heat, then add the brown sugar and sugar. Whisk to dissolve completely until the mixture is smooth.
Let the mixture boil and simmer for 5 minutes on low heat. This allows the sugars to caramelize slightly, giving you that rich toffee flavor.
Carefully pour the toffee mixture onto the graham crackers, working quickly with a spatula to even out the layer. The warmth of the mixture will help it spread.
Bake for 10 minutes. This step helps set the toffee, making it easier to layer the chocolate.
Remove from the oven and evenly spread out the dark chocolate chips over the hot toffee. Let them sit for 5 minutes to soften.
Using a spatula, gently spread the melted chocolate evenly across the toffee layer. Make sure to cover every inch for a chocolatey delight!
Top with the chopped macadamia nuts, pressing them gently into the chocolate to help them adhere.
Let the bark cool at room temperature for a bit, then refrigerate for 2 hours to set completely.
Once set, break the bark into pieces. Share with the world and enjoy the compliments!