Preheat oven to 350°F. Line standard 12-cup muffin pan with baking cups; spray cups with cooking spray.
In medium bowl, whisk flour, baking powder, baking soda and salt; stir in 3/4 cup oats. In large bowl, mash bananas; whisk in egg, milk, granulated sugar, yogurt and vanilla extract. Add flour mixture to banana mixture; stir until just combined. Fold in strawberries.
Divide batter into prepared cups; sprinkle with turbinado sugar and remaining 1/4 cup oats. Bake muffins 25 minutes or until golden brown and toothpick inserted in center of muffins comes out clean; cool 15 minutes in pan. Makes 12 muffins.