Preheat your oven to 350°F and line a 13×18 baking sheet with aluminum foil. Lay out the Saltine crackers in a single layer on the sheet.
In a saucepan over medium heat, melt the butter and brown sugar until it's a bubbly, thick mixture (about 2-3 minutes). Stir in the vanilla extract.
Pour this buttery goodness over the saltines, spreading it evenly with a rubber spatula.
Bake for 4-5 minutes until the sauce turns brown and bubbly.
Take the baking sheet out, sprinkle the chocolate on top, and let it sit for 5 minutes until it melts. Use the spatula to spread it evenly over the crackers, then add your candy pieces and toppings.
Pop the sheet into the fridge for 1-2 hours until the chocolate hardens. Remember, don't freeze it; we want everything to stay perfectly together!
Once it's set, break the candy into pieces and savor every bite!