Preheat the oven to 400 degrees Fahrenheit. Line a 10x15 baking pan with foil and spray with nonstick spray.
Spread the Saltine Crackers in rows on the pan, filling the pan as much as you can with them. 35 Saltine Crackers
Add the butter and brown sugar to a small sauce pan over medium high heat. Let the butter melt and bring the mixture to a boil. Boil for 2 to 3 minutes, or until the mixture is a nice caramel brown color. (You can also check the temperature it should be between 270 and 290 F) 1 cup Unsalted butter, 1 cup Brown sugar
Remove the toffee from the heat and stir in the vanilla extract. 1/2 tsp Vanilla extract
Carefully pour the toffee over the crackers slowly, trying not to move the crackers around too much as you pour.
Place the pan in the preheated oven and bake for 3 to 5 minutes, until the mixture is bubbly. Remove the pan from the oven.
Sprinkle the chocolate chips over the top of the toffee and let them sit for 1 to 2 minutes until you can tell they are starting to melt and lose their shape. 2 cups Semi Sweet Chocolate Chips
Spread the chocolate slowly over the toffee until melted using an offset spatula or rubber spatula covering the toffee completely.
Sprinkle the pecans evenly over the top of the toffee. 1/2 cup Chopped Pecans
Let the toffee sit at room temperature until chocolate is set. You can place it in the fridge or freezer to speed up the process.
Remove the toffee from the pan and break the toffee into small pieces.