Ingredients
3/4 cup butter, softened3/4 cup packed brown sugar1 large egg yolk, room temperature3/4 teaspoon vanilla extract1-1/2 cups all-purpose flourFILLING:1 package fudge brownie mix (13x9-inch pan size)1/3 cup water1/3 cup canola oil1 large egg, room temperatureTOPPING:1 package (11-1/2 ounces) milk chocolate chips, melted3/4 cup chopped salted roasted pistachios
Preparation
Preheat oven to 350°. In a large bowl, cream butter and brown sugar until light and fluffy, 5-7 minutes. Beat in egg yolk and vanilla. Gradually beat in flour, mixing well. Press onto bottom of a greased 15x10x1-in. baking pan.
Bake until golden brown, 12-14 minutes. Meanwhile, in a large bowl, combine brownie mix, water, oil and egg until blended.
Spread brownie batter over hot crust. Bake until center is set, 14-16 minutes. Cool completely in pan on a wire rack.
Spread melted chocolate over top; sprinkle with pistachios. Let stand until set. Cut into 36 bars.
