01 -
Preheat the oven to 400°F.
02 -
Line a 10x15-inch jelly roll pan with nonstick aluminum foil or heavy-duty foil sprayed with baking spray. Arrange the saltine crackers in a single layer to cover the bottom.
03 -
In a medium saucepan, combine dark brown sugar, butter, and kosher salt. Cook over medium heat, stirring frequently until the butter is melted. Continue to cook, stirring, for 3 to 5 minutes until the mixture boils and becomes a smooth caramel. Do not allow to boil more than 30 seconds. Remove from heat and stir in vanilla extract.
04 -
Evenly pour the hot caramel over the crackers and spread to coat each cracker.
05 -
Bake in the oven for 5 minutes until the caramel is bubbling throughout.
06 -
Melt the chopped semi-sweet chocolate using a microwave in short intervals or over a double boiler until smooth.
07 -
Remove the pan from the oven and allow to cool for 1 minute. Pour the melted chocolate over the caramel-covered crackers and use a spatula to spread evenly.
08 -
If desired, sprinkle chopped nuts or coconut flakes over the chocolate layer.
09 -
Allow the tray to cool to room temperature, then refrigerate overnight until completely set.
10 -
Lift candy from pan, carefully remove foil, and break or cut into snack-sized pieces. Store in an airtight container in the refrigerator for up to one week or freeze between parchment layers for up to two months.