Fudge-Filled Brownie Bars - cooking recipe

Ingredients

1 1/2 cups all-purpose flour
3/4 cup packed brown sugar
3/4 cup butter, softened
1 egg yolk
3/4 teaspoon vanilla extract
Filling
1 (18 ounce) package fudge brownie mix (13 inch x 9 inch pan size)
1 egg
1/3 cup water
1/3 cup vegetable oil
chopped walnuts, toasted

Preparation

In large bowl, combine the first five ingredients.
Press onto the bottom of a 15 inch x 10 inch x 1 inch baking pan.
Bake at 350 for 15-18 minutes or until golden brown.
Meanwhile in a large bowl, combine the filling ingredients.
Spread over hot crust.
Bake for 15 minutes or until set.
Cool on wire rack for 30 minutes.
Spread melted chocolate over filling.
Sprinkle with walnuts.
Cool completely.
Cut into bars.