In a large bowl mix together the butter and sugars.

Mix Sugars and Butter

Add the mashed bananas and sour cream, mix to evenly combine.

Add Bananas and Sour Cream

Gently fold in the flour, baking soda, salt, and ground cinnamon.

Add Dry Ingredients

Step 3

 Fold in the nuts, make sure to not over mix

Add Nuts

Step 3

In a small bowl whisk together the melted butter, brown sugar, and ground cinnamon until fully combined.

Make the Cinnamon Swirl

Step 4

Scoop the cinnamon swirl batter into seven spoonfuls on top of the plain batter. Swirl the cinnamon. Then, sprinkle brown sugar on top and bake.

Create Swirl

Step 5