Pre-heat oven to 325 degrees F
Line a large jelly roll pan with foil. Spray foil with nonstick spray.
Fill the bottom of your pan with a single layer of crackers.
Combine butter and sugar in a medium sized pot and cook on medium to medium low. Stir constantly. Bring your mixture to a rolling boil. Let boil for 3 minutes...continue stirring constantly. Your mixture will get all bubbly and amber colored. This will be your toffee layer.
Add vanilla to boiling mixture.
Remove your toffee from the heat and immediately pour over the crackers. Spread your mixture until it covers your crackers and is spread as evenly as possible.
Place in the oven for 7-9 minutes (until it gets all nice and bubbly).
Remove from Pan and dump your chocolate chips on top immediately. You want them to melt, so don't dilly dally:)
Spread melty chips with a spatula or gently with a butter knife to spread the chocolate evenly over the toffee.
Sprinkle with your toppings. Place in the freezer for at least 15 minutes to cool and harden.
Remove from the freezer. Flip over pan and remove foil from bottom of candy. Break toffee into large chunks and enjoy.
Store in an airtight container for up to 2 weeks. Can be stored in the fridge or freezer for extended periods.