Christmas Crack (Saltine Cracker Toffee) Ingredients: 35 saltine crackers (about 1 sleeve; adjust slightly to fit your pan) 1 cup unsalted butter 1 cup brown sugar, well packed 1 teaspoon vanilla extract ½ teaspoon salt (kosher or sea salt preferred) 2 cups chocolate chips (milk or semi-sweet; Guittard or Ghirardelli recommended) Directions: Prepare the Pan: Line a 10x15-inch jelly roll pan with nonstick foil (or use heavy-duty foil and coat it with cooking spray). A silicone baking mat can also