Triple-Layer Cracker Toffee Bars

90 buttery rectangular crackers (from 13.7-oz box)                                                                

1 can (14 oz) sweetened condensed milk (not evaporated)                                                                

1  cup packed brown sugar                                                                

1/2 cup butter                                                                

1/4  cup milk                                                                 

1  bag (11.5 oz) milk chocolate chips (2 cups)

1 Line 13x9-inch pan with foil. Spray foil with cooking spray. Place 30 of the crackers in bottom of pan.                                                            

2 In 2-quart saucepan, mix condensed milk, brown sugar, butter and milk. Cook over medium heat until butter is melted, stirring frequently. Increase heat to medium-high; heat to boiling. Boil 5 minutes, stirring constantly.                                                            

3 Pour one-third of the caramel mixture over crackers in pan. Arrange 30 of the crackers over caramel. Top with one-third of the remaining caramel mixture. Repeat with remaining crackers and caramel.                                                            

4 In small microwavable bowl, microwave chocolate chips uncovered on High 1 to 2 minutes, stirring every 30 seconds, until melted and smooth. Pour over caramel; spread evenly. Refrigerate about 1 hour or until set. Cut into 6 rows by 8 rows. Store covered up to 4 days.

Source: Pillsbury