I have made these a couple times now and everyone seems to love them.
Toffee Brownie Bars
¾ cup butter or margarine, softened
¾ cup firmly packed brown sugar
1 egg yolk
¾ teaspoon vanilla extract
1 ½ cups all-purpose flour
1 (21 oz) package Duncan Hines family-Style Chewy Fudge Brownie Mix
1/3 cup water
1/3 cup vegetable oil
1 package (12 oz) milk chocolate chips, melted
¾ cup finely chopped pecans
1.) Preheat oven to 350°F. Grease 15½X10½X1-inch baking pan.
2.) For crust, combine butter, brown sugar, egg yolk and vanilla extract in large bowl. Stir in flour. Spread in pan. Bake 15 minutes or until golden.
3.) For filling, prepare brownie mix following package directions. Spread over hot crust. Bake 15 minutes or until surface appears set. Cool 30 minutes.
4.) For topping, spread melted chocolate on top of brownie layer, sprinkle with pecans. Cool completely.
Makes 48 bars.
Bars may be made ahead and frozen in an airtight container for several weeks.