Preheat your oven to 350°F (175°C). Line a muffin tin with paper liners or lightly grease it.
In a large mixing bowl, combine the rolled oats, flour, brown sugar, baking powder, baking soda, salt, and cinnamon. Mix well to ensure all the dry ingredients are evenly combined.
In another bowl, mix the mashed bananas, yogurt, eggs, honey (or maple syrup), and vanilla extract until smooth and well blended.
Pour the wet mixture into the dry mixture. Stir gently until just combined – be careful not to overmix!
Fold in the chopped strawberries and nuts (if using) until evenly distributed within the batter.
Spoon the batter into the prepared muffin tin, filling each cavity about two-thirds full.
Bake for 18-22 minutes or until a toothpick inserted into the center of a muffin comes out clean.
Allow the muffins to cool in the tin for about 5 minutes before transferring to a wire rack to cool completely.
Notes
Serve warm with a dollop of Greek yogurt and a sprinkle of chopped strawberries.