Instructions

  1. Sift together flour, baking powder, baking soda, and salt.
  2. Cream butter with sugar until fluffy.
  3. Beat in eggs.
  4. Puree bananas, sour cream and vanilla.
  5. Alternate dry ingredients and banana mixture to the egg mixture.
  6. Beat enough to incorporate.
  7. Fold in raspberries and toasted nuts.
  8. Spoon into greased muffin tins and bake in a preheated 350 deg F oven for about 25 minutes, until puffed, browned and springy.
  9. Makes about 15 muffins.