Toffee Chocolate Squares Graham crackers 1 cup dark brown sugar 1 cup butter 1 (11 3/4 ounce) package milk chocolate chips 1 cup ground pecans Line a pan (at least 15 x 10-inches in size) with foil on bottom and sides. Line this with separated rectangular graham crackers (not crumbs) placed side by side. Simmer the sugar and butter together for 3 minutes. Pour mixture quickly over crackers and bake in a preheated 400 degree F oven for 5 minutes. Remove from oven. Sprinkle chocolate chips over all, spreading to cover as they melt. Sprinkle pecans over top. Cool and cut into squares. Makes about 75 squares.