3 teaspoons baking powder
1 tablespoon orange zest
- Beat the butter and the sugar.
- Add the orange zest, baking powder and the eggs and keep stirring.
- Ass the yogurt and then the flour and mix very well; place in a buttered baking dish, smoothing the mixture out to fit the dish evenly.
- Bake in a preheated oven at 400oF for about 40 minutes.