Preheat oven to 350°F (175°C). Grease or line a muffin tin.
Mix banana, yogurt, egg, honey, and vanilla until smooth.
Stir in oat flour, cinnamon, and baking powder to form batter.
Fill cups halfway, add ½ tsp center mix, then cover with batter.
Bake 15–18 minutes until set and lightly golden. Cool 2 minutes.
Swirl batter gently, don't overmix to keep muffins fluffy.
Add a light glaze of yogurt and honey after cooling for more cinnamon roll flavor.
Store in fridge up to 3 days or freeze for 1 month.
Reheat 10–15 sec microwave or 3 minutes oven/air fryer.
