Preheat oven to 350°F and spray a 9"x5" loaf pan non-stick cooking spray. Set aside.
In a medium bowl, add banana, eggs, coconut oil, vanilla, date sugar and honey. Beat with a hand mixer on medium until smooth. Add all of the dry ingredients and mix until completely combined, being careful not to overmix. Stir in 1/2 cup of chopped walnuts.
Pour batter into prepared loaf pan. Sprinkle with remaining nuts. Bake for 40-45 minutes or until a toothpick inserted in the middle comes out clean. Let cool.
Store covered in the refrigerator for up to a week, or freeze for months.