Mix dry ingredients and set aside

Cream together the butter and brown sugar.

Stir in the egg and vanilla.

Mix the dry and wet ingredients together and add the yogurt.

Put the batter into a pan greased with something (spray or butter).

Bake at 350° for about 45 minutes.

NOTES: You can add some milk if dough is too thick. Mine was a thick dough (didn't even spread across the bottom of the pan), but it quickly spread out and puffed up nicely in the oven.