Preheat oven to 350°. Brush 9 x 5-inch loaf pan with additional I Can't Believe It's Not Butter!® Spread; set aside.
Combine mashed banana, I Can't Believe It's Not Butter!® Spread, brown sugar, eggs and vanilla in large bowl with wooden spoon. Stir in remaining ingredients until blended. Spoon into prepared pan*.
Bake 1 hour to 1 hour 10 minutes until toothpick inserted in center comes out clean. Cool 20 minutes on wire rack; remove from pan and cool completely. If desired, top with Vanilla Glaze.