1. Preheat the oven to 425. Grease lightly or line your muffin tins with paper muffin liners.
2. Whisk olive oil and sugar until thickened. Add Greek yogurt, milk, vanilla, egg, baking powder, baking soda, salt and cinnamon. Whisk until well combined.
3. Add the flour all at once folding gently to combine with a rubber spatula. When the flour is about 75% folded, add the apples and finish folding until everything is evenly combined. Do not overmix. Divide the batter between 12 muffin cups. Sprinkle a little bit of Turbinado sugar on top of each muffin.