Caramel Walnut Dream Bars

Description
This recipe came from an estate sale. I obtained it when I purchased the family collection from the Wagner Estate in Tulsa, Oklahoma in 1991.
 * Contributed by Catsrecipes Y-Group

Ingredients

 * 1 box yellow cake mix
 * 3 tablespoons butter softened
 * 1 egg
 * 14 ounces sweetened condensed milk
 * 1 egg
 * 1 teaspoon pure vanilla extract
 * ½ cup walnuts finely ground
 * ½ cup finely ground toffee bits

Directions

 * 1) Preheat oven to 350°F.
 * 2) Prepare rectangular cake pan with cooking spray then set aside.
 * 3) Combine cake mix, butter and one egg in a mixing bowl then mix until crumbly.
 * 4) Press mixture onto bottom of prepared pan then set aside.
 * 5) In another mixing bowl combine milk, remaining egg, extract, walnuts and toffee bits.
 * 6) Mix well and pour over base in pan.
 * 7) Bake for 35 minutes.