I've made this in a jelly roll pan and sprinkled with a brown sugar crumb topping. The crumb is added to the bottom of this recipe. It is not part of the original recipe.
2 1/2 cups all-purpose flour
1 tablespoon baking soda
1 pinch salt
1/2 cup unsalted butter
1 cup white sugar
3/4 cup light brown sugar
2 eggs
4 ripe bananas, mashed
2/3 cup buttermilk
1/2 cup chopped walnuts
Recipe
Preheat oven to 350 degrees F (175 degrees C).
Grease and flour 2 - 8 inch round pans.
In a small bowl, whisk together flour, soda and salt; set aside.
In a large bowl, cream butter, white sugar and brown sugar until light and fluffy. Beat in eggs, one at a time.
Mix in the bananas. Add flour mixture alternately with the buttermilk to the creamed mixture.
Stir in chopped walnuts. Pour batter into the prepared pans.
Bake in the preheated oven for 30 minutes. Remove from oven, and place on a damp tea towel to cool.
I add this crumb topping.
1/3 cup packed brown sugar
1/8 cup all-purpose flour
1/8 teaspoon ground cinnamon
1 tablespoon butter
In a small bowl, mix together brown sugar, flour and cinnamon. Cut in butter until mixture resembles coarse cornmeal. Sprinkle topping over muffins