Preheat the oven to 350 degrees Fahrenheit. Grease a 9x5 loaf pan with coconut oil or cooking spray and then line with parchment paper.
Whisk together the sweet potato, eggs, maple syrup, and vanilla in a medium bowl. Add the remaining ingredients and stir with a rubber spatula until a smooth batter forms.
Pour the batter into prepared pan. If using, sprinkle with oats, seeds, nuts, and chocolate chips until top is covered. Bake for 40-50 minutes or until a toothpick comes out clean. It may need to bake up to one hour. If necessary, cover lightly with a sheet of foil in the last 10 minutes or so of baking to keep from burning toppings.
Allow bread to cool completely in pan on a wire rack. Remove bread from pan using the parchment 'handles'. Slice and serve.
Notes
To store: Wrap the cooled loaf in plastic wrap, aluminum foil, or keep it in an airtight container at room temperature. Store for 2-3 days. The loaf can also be stored in the refrigerator for up to one week. Adapted from my Easy Pumpkin Bread.