Banana Muffins With Sour Cream with chocolate

4 cups flour 1 teaspoon baking soda 4 teaspoons baking powder 1 teaspoon salt 1/2 cup soft butter 1 cup brown sugar 4 bananas , mashed 1 cup sour cream 4 eggs[...]

2 cups unbleached all-purpose flour 3/4 cup brown sugar (I used 1/2 cup and it was perfect) 1 teaspoon baking powder 1/2 teaspoon baking soda 3 ripe bananas 1[...]

4 medium mashed ripe bananas 2 tablespoons vegetable oil 1/4 cup plain yogurt 1/3 cup brown sugar , packed 1 teaspoon salt 1 egg 1 teaspoon vanilla 1 1/2 cups[...]