Pre-heat oven to 350°, prep 9 x 13 pan with foil or parchment paper. Spray the foil.

In medium bowl, mix tog flour, b. powder, salt and set aside. Beat tog butter and brown sugar, gently beat in eggs one at a time, then add vanilla and rum. Stir dry ingredients into batter, let it cool completely then stir in choco chips and nuts.

Spread the batter evenly into pan and bake for approx. 35 minutes. Cool completely. Cut into squares, serve.