From my mother-in-law's kitchen;
Ingredients
2 cups all-purpose flour
2 teaspoons baking powder
1/2 teaspoon baking soda
1 teaspoon fine sea salt
3 very ripe bananas, about 1 cup mashed
8 tablespoons unsalted butter
1 cup dark brown sugar
2 large eggs
3 tablespoons sour cream
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