Step 1

Heat oven to 350°F. Spray bottom of 13x9-inch pan with cooking spray.

Step 2

Open cookie mix; remove cinnamon-sugar packet, and reserve 2 teaspoons for topping.

Step 3

In large bowl, beat cookie mix, cake mix, melted butter, eggs and remaining cinnamon-sugar mixture with electric mixer on low speed 30 seconds. Beat on medium speed about 1 minute or until blended. Stir in 1/4 cup of the toffee bits. Spread evenly in pan.

Step 4

Bake 32 to 35 minutes or until golden brown and toothpick inserted in center comes out clean. Cool completely, about 1 1/2 hours.

Step 5

Spread frosting on top of bar. Sprinkle reserved 2 teaspoons cinnamon-sugar mixture and remaining toffee bits over top. Cut into 6 rows by 4 rows. Store loosely covered in single layer at room temperature.