I make a version with saltines:

Cracker Candy

Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
1 sleeve saltine crackers, or more to cover pan
2 sticks unsalted butter
1 cup sugar
12 ounces chocolate chips
3/4 cup pecans -- chopped
1 pinch salt

Arrange saltines on a cookie sheet lined with foil, covering entire sheet. Melt sugar with butter; bring to a boil over medium heat, stirring constantly. Continue to boil for three minutes, stirring constantly. Pour over crackers and spread with an offset spatula to cover all. Bake at 350 for 12-15 minutes, until golden brown. Let stand for 2 minutes. Cover with chocolate chips; spreading melting chocolate to cover. Top with chopped nuts, pressing nuts into chocolate. Chill until firm, then break apart.