Praline Crumb Caramel Cheesecake Bars

 1 pouch sugar cookie mix (17.5 oz)
1/2 cup cold butter
3/4 cup chopped walnuts
3/4 cup toffee bits
2 pkg (8 oz each) cream cheese, softened
1/2 cup sugar
2 Tbsp all purpose flour
1/2 cup caramel topping
1 tsp vanilla
1 egg

Heat oven to 350.  Spray 13x9 pan with nonstick spray.  Place cookie mix in bowl.  Cut in butter using fork until mixture is crumbly.  Reserve 1 1/2 cups mixture for topping.  Press remaining mixture in bottom of pan.  Bake 10 minutes.  Meanwhile, in large bowl, beat cream cheese, sugar, flour, 1/4 cup caramel topping, vanilla and egg with electric mixture on medium speed until smooth.  Spread cream cheese mixture evenly over partially baked cookie base.  Sprinkle with reserved crumb topping, walnuts and toffee bits.  Bake 35-40 minutes or until light golden brown.  Cool 30 minutes.  Refrigerate about 2 hours or until chilled.  Drizzle with remaining 1/4 cup caramel topping.  Store covered in refrigerator.