Step 1

Heat oven to 350°F (325°F for dark or nonstick pan). Spray bottom only of 13x9-inch pan with Crisco® Original No-Stick Cooking Spray.

Step 2

In medium bowl, stir 1/2 cup melted butter, 1 1/2 cups of the cracker crumbs and 3/4 cup of the toffee bits. Press mixture evenly in bottom of pan. Refrigerate about 15 minutes or until firm.

Step 3

Meanwhile, let cookie dough stand at room temperature 10 minutes to soften. In 2-quart saucepan, heat chocolate chips, milk and 1 tablespoon butter over medium heat, stirring frequently, until chips are melted and mixture is smooth. Remove from heat; stir in vanilla. Spread mixture over cracker crust.

Step 4

In medium bowl, break up cookie dough. Mix in remaining 1/2 cup cracker crumbs with wooden spoon until well blended. Crumble mixture evenly over chocolate layer. Sprinkle with remaining 3/4 cup toffee bits.

Step 5

Bake 25 to 35 minutes or until golden brown. Cool completely, about 2 hours. For a firmer bar, refrigerate 30 minutes longer. For bars, cut into 8 rows by 4 rows.