Preheat oven to 350°F (175°C). Line a baking sheet with foil.
Arrange the saltines in a single layer to cover the pan. An 8x6 formation fits perfectly.
48 saltine crackers
In a small saucepan, melt the butter and brown sugar over medium heat, stirring constantly. Bring to a gentle boil for 3 minutes.
2 sticks butter, 1 cup brown sugar
Immediately pour the hot toffee mixture over the saltine layer. Carefully spread it evenly over the crackers with a rubber spatula.
Put in the oven and bake for 5 minutes.
Remove from the oven and immediately sprinkle chocolate chips over the top. Let sit 2 minutes, then carefully spread into an even layer.
2 cups chocolate chips
While chocolate is still melted, decorate with Halloween candy and toppings. I used colored coconut shreds, pretzels, and candy corn.
candy corn, pretzels, shredded coconut
Chill in the fridge to cool completely and set. At least 20 minutes.
Break or cut into irregular pieces and serve!