Cream margarine in large bowl or food processor. Add sugar and blend. Add egg, vanilla and bananas.
In small bowl, sift together flour, salt and baking soda. Add to banana mixture.
Stir in chocolate chips.
Place by teaspoons on greased baking sheet or parchment paper. Bake at 350 degrees F for 8-9 minutes. Brown only on edges. After removing from oven, allow to rest on cookie sheet a few minutes.
Makes 5 dozen