Note: These recipes use NZ measurements. 1 c = 1 cup = 250 ml. 1 T = 1 tablespoon = 15 ml. 1 D = 2 teaspoons. 1 t = 1 teaspoon = 5ml. If you're in America, you may find you need a little extra baking powder in recipes that use it.
1 t baking powder
Cream butter and sugar, and beat in eggs. Add dates and walnuts, sift in flour and baking powder, then mix well. Bake in a Swiss roll tin at 180C for 20-25 minutes.