1 t vanilla
1½ C flour
2 t baking powder
1 C chopped nuts or a mix of nuts and chocolate chips
When butter is melted, add all the other ingredients. (Sift the flour, baking powder and salt together to be sure there are no lumps.) Mix everything together, combining well.
Spread into 9X13" pan lined with cooking paper and bake for 25-30 minutes, until dry on top and almost firm.
Cool 10 minutes and cut into squares.