
Fluffy and soft healthier banana muffins with swirls of strawberry jam.
Preheat oven to 400°F. Line a muffin tin with muffin liners.
In a large mixing bowl, whisk together mashed bananas, maple syrup, oil, yogurt, milk, egg, vinegar, and vanilla until combined. Add flours, baking powder and soda, and salt. Use a rubber spatula or wooden spoon to fold dry ingredients into wet until a smooth batter forms.
Add dollops of strawberry jam on top of the batter and swirl in using a spoon. Fill each muffin liner mostly full with batter.
Bake muffins for 5 minutes. Reduce oven temp to 350°F and bake for another 15-17 minutes until toothpick inserted comes out mostly clean (a few moist crumbs is ok). Allow muffins to cool in the tin for 5 minutes before carefully transferring to a wire cooling rack.