Whole wheat flour: 1 cup， Baking soda: 1/2 tsp， Fine sea salt: 1/2 tsp， Baking powder: 1/4 tsp， Ground cinnamon: 1/2 tsp， Ground nutmeg: 1/2 tsp， Grapeseed oil: 1/2 cup， Large egg: 2， Pure maple syrup: 1/4 cup， Pure vanilla extract: 2 tsp， Mashed banana: 1 cup (about 3 small bananas)， Fresh blueberries: 1 cup
1Position an oven rack in the center of the ice and preheat the oven to 325F. Line 12 muffin cups with paper lines.
2In a medium bowl, whisk together the flour, baking soda, baking powder, cinnamon and nutmeg.
3In a large bowl, whisk together the oil, maple syrup, eggs, and vanilla extract until blended. Stir in the banana and blueberries. Add the flour mixture and stir until just blended.
4Spoon 1/3 cup of the batter into each muffin liner. Bake until a cake tester or wooden skewers inserted into the center of the muffins comes out with moist crumbs attached, 25 to 30 minutes. Unmoved and cool completely on a wire rack for at least 1 hour before serving.