Preheat oven to 375°F
Use vegetable oil to grease a 9-inch round cake pan or loaf pan.
Gently combine the yogurt, eggs, sugar, vanilla, and oil.
Separately, mix together the flour and baking powder.
Add the dry ingredients to the wet ingredients and mix until just combined. Be sure not to over mix.
If you like, add in berries, chocolate chips, or any other flavoring.
Bake for 35 minutes. Bake for 5 more if the cake doesn't pass the knife test. It should be almost crispy on the outside and springy on the inside.