Preheat oven to 400F degrees

Line 9x13 inch sheet pan with aluminum foil and spray with non-stick cooking spray

You can use parchment paper instead of foil for easier removal of the candy

Line pan with crackers in a single layer

In sauce pan, combine butter and brown sugar, and bring to full boil

Boil for 3 minutes, stirring constantly

Immediately pour sauce over crackers and spread completely

Bake crackers at 400F degrees for 5 minutes, until toffee is bubbly

Remover from over and sprinkle chocolate chips over crackers

Let chocolate chips sit for 3 to 4 minutes to melt

Spread melted chocolate over crackers then top with nuts or other toppings

Let cool for 10 to 15 minutes, then put in fridge until cold and chocolate is set.

Break into pieces