Preheat the oven to 425°F and line an 8x8 baking dish with parchment paper.
Arrange the Ritz crackers in a single layer across the bottom of the pan. Don’t worry about perfection—just fit them in as best you can.
Combine the butter and brown sugar in a saucepan and bring to a boil. Let it boil for exactly 3 minutes without stirring.
Pour the caramel mixture evenly over the crackers, using a spatula to spread it out. Bake for 5 minutes to allow the caramel to thicken and set.
Remove the pan from the oven and sprinkle chocolate chips evenly over the top. Return it to the oven for about 2 minutes or until the chocolate softens enough to spread.
Using a spatula, spread the melted chocolate into an even layer. Add your favorite toppings, such as crushed peppermint, nuts, or sprinkles if desired.
Allow the dessert to cool completely for several hours before removing it from the pan and breaking it into pieces. For faster cooling, place it in the refrigerator.