1-First, line a baking pan with foil and arrange 35 saltine crackers in a single layer. This step sets the foundation for the recipe, providing that essential salty base. Preheat your oven to 350°F (175°C) along with melting the butter and sugar mixture.

2-Now, in a saucepan, melt 1 cup (227 grams) of unsalted butter with 1 cup (220 grams) of packed brown sugar over medium-high heat. Stir frequently as it comes to a boil, letting it bubble for exactly 3 minutes to achieve the perfect caramel consistency.

3-After boiling, remove the saucepan from the heat and stir in 1 teaspoon of vanilla extract and ½ teaspoon of kosher or sea salt. Pour this caramel evenly over the crackers on the pan, making sure every cracker is coated. Bake it at 350°F (175°C) for 5 minutes until the caramel bubbles vigorously across the surface.

4-Once out of the oven, sprinkle 2 cups (340 grams) of chocolate chips over the hot caramel. Cover with foil and let it sit for 5 minutes to melt the chocolate fully. Then, spread the melted chocolate evenly with a spatula for a smooth finish.

5-Add optional toppings like nuts, crushed cookies, pretzels, toasted coconut, sea salt, or crushed candy canes while the chocolate is still soft. Allow the whole tray to cool at room temperature or chill in the refrigerator for at least 2 hours to set. Break into pieces and serve for a festive snack.