Preheat oven to 350 degrees Fahrenheit
In a bowl combine grated zucchini, egg, yogurt, vegetable oil, sugar, and vanilla
In a separate bowl combine dry ingredients: flour, baking soda, cinnamon, and salt
Add flour mixture to the zucchini mixture and mix until flour is no longer visible
Add batter to a greased loaf pan
Bake in oven for approximately 20 to 25 minutes or until tester inserted in the center comes out clean