Preheat oven to 350°F

In a large bowl, combine flour, baking soda and salt. In a mixing bowl, cream together butter and sugar. Stir in eggs and mashed bananas until well blended

Stir the banana mixture into the flour mixture and stir until moistened, then add the berries and fold gently. Pour mixture into sprayed loaf pans, bake for 30 minutes and check