Double Chocolate Fantasy Bars

cookies

18 1/2 oz pkg chocolate cake mix
1/3 cup vegetable oil
1 egg
1 cup nuts; chopped
14 oz condensed (not evaporated) milk; can
6 oz chocolate chips; semisweet
1 teaspoon vanilla extract
1 dash salt

Preheat oven to 350 degrees. In large mixer bowl, beat cake mix, oil and egg over medium speed until crumbly. Add nuts. Reserving 1 1/2 cups crumb mixture, press remainder firmly on bottom of greased 13 x 9" baking pan. In small saucepan, combine remaining ingredients. Over medium heat, cook and stir until chips melt. Pour evenly over prepared crust. Top with reserved crumb mixture. Bake 25 to 30 minutes or until bubbly. Cool. Cut into bars. Store loosely covered at room temperature.