Cream the margarine and cream cheese together. Gradually add the white sugar, and continue beating until light and fluffy. Add egg substitutes, beating well after each addition. Stir in the mashed bananas and vanilla. Add flour, baking soda, and baking powder.
In a small bowl, mix together chopped pecans, 2 tablespoons brown sugar, and cinnamon.
Divide 1/2 batter into two greased and floured 8x4 inch loaf pans. Sprinkle pecan mixture over batter in pans, and top with remaining batter.
Bake at 350 degrees Fahrenheit (175 degrees C) for 45 minutes, or until an inserted toothpick comes out clean.
Hope you enjoy this bread! This is my all time favorite banana bread recipe, so I hope ya'll like it, too!