1. In a large bowl, sift or stir together flour, sugar and baking soda; mix in walnuts. 2. Combine bananas, buttermilk, eggs and butter; stir into dry ingredients just until moistened. 3. In a large skillet or griddle, melt just enough butter over medium heat to coat the surface of the pan. 4. Pour in about 3 tbsp. 5. of batter for each pancake; cook pancakes, in batches, for 1-1/2 to 2 minutes on one side or until tiny bubbles appear on the surface and the bottom is golden brown. 6. Flip and cook the second side for about 1 minute or until golden.