Preheat oven to 350 degrees F. Grease an 8x8x2 inch pan with butter flavor Crisco. Set aside. Combine butter flavor Crisco and milk in large saucepan. Place on low heat until Crisco melts. Remove from heat. Stir in brown sugar. Add egg. Stir until well blended.
Combine flour, baking powder and salt. Stir into sugar mixture. Stir in vanilla and nuts. Spread evenly into baking pan.
Bake for 27 to 30 min, or until a wooden pick inserted into center comes out clean. Cool in pan. Cut into 2x2 inch squares.