Preheat oven to 350°F. Grease a standard size loaf pan or line with parchment paper.
In a large bowl, whisk together the dry ingredients.
Add mashed bananas, oil, vanilla, and eggs.
Stir until well combined.
Stir in walnuts or chocolate chips, optional.
Spread into prepared loaf pan. Sprinkle top with extra nuts or chocolate chips, if desired.
Bake at 350°F for 50-55 minutes. Check for doneness with a toothpick in center or digital meat thermometer. Bread is done when toothpick comes out clean or internal temperature is 200-205°F.
Notes
For measurements in grams click "metric" button at the top of ingredients list.Store in airtight container at room temperature up to 3 days.