Preheat oven to 375*
Spray muffin tin or use liners.
Whisk together in small bowl: eggs, yogurt, honey, oil, and vanilla until well blended.
In a larger bowl, combine together dry ingredients: flour, oatmeal, brown sugar, baking powder, baking soda, and cinnamon.
Stir wet ingredients into dry, do not over mix.
Gently fold in diced peaches.
Pour batter into 12 muffin cups.
Bake for 20 minutes or until inserted toothpick comes out clean.
Cool on wire rack.