FROM THE KITCHEN OF: Gary & Margie Hartford [Eugene, Oregon] Heat oven to 350 degrees F. Grease square pan, 8x8x2 inches. Beat brown sugar and margarine until fluffy. Stir in baking mix and walnuts until mixture is crumbly; reserve 1 cup. Press remaining mixture in pan. Bake 12 minutes. Mix cheese and granulated sugar; beat in reaining ingredients until smooth. Spread cream cheese mixture overlayer in pan; sprinkle withreserved crumbly mixture. Bake until center is firm, about 25 minutes. Cut into about 2-inch squares. Store cookies in refrigator. 16 cookies. NOTE: High altitude directions (3500 to 6500 ft), Heat oven to 375 degrees.