Chocolate Truffle Crumb Bars - cooking recipe

Ingredients

1 (18 1/4 ounce) package chocolate cake mix (I used Duncan Hines Devil's Food)
1/3 cup butter, melted
1 large egg
2 cups semi-sweet chocolate chips, divided
1 (14 ounce) can sweetened condensed milk
2 teaspoons vanilla extract
1 cup walnuts, chopped (I left these out because she doesn't like nuts)

Preparation

Preheat oven to 350\u00b0F
Spray the bottom only of a 13 x 9 inch baking pan with nonstick cooking spray.
In a large bowl, place the cake mix, melted butter and egg.
Blend 1 to 2 minutes with mixer set on medium speed until crumbly.
Set aside 1 cup of the crumb mixture.
Firmly press remaining crumb mixture into bottom of pan.
Bake 15 minutes.
In a medium saucepan, combine 1 cup of the chocolate chips and condensed milk.
Warm over low heat, stirring until smooth.
Remove from heat and stir in vanilla.
Spread over hot crust.
Stir walnuts and remaining 1 cup chocolate chips into reserved crumb mixture.
Sprinkle over chocolate filling.
Bake 25 to 28 minutes or until topping is firm to the touch.
Transfer to wire rack and cool completely.
Cut into bars.