Preheat oven to 350 F. Grease 1 regular bread pan, and/or line it with parchment paper. (Parchment paper lets you lift the whole loaf out, easily!)
In a medium bowl, whisk together flours, baking soda, and salt. Set aside.
In a separate bowl - you’ll want a large bowl - mash together together bananas and sugar until smoothish. (You CAN use an electric hand mixer or stand mixer for this if you need to, I just do it with a potato masher!)
Add vegetable oil, eggs, and vanilla extract to the mashed bananas, stir well to combine.
Add the flour mixture to the mixing bowl of wet ingredients. Use a wooden spoon or rubber spatula to stir just until combined, with no obvious streaks of flour in the batter.
In a small bowl, toss the blueberries with the 2 tablespoons of flour, until coated. Add floured blueberries to the batter, gently folding in to incorporate.
Pour batter into the prepared loaf pan. Sprinkle with coarse sugar and/or additional blueberries, if desired.
Bake in the preheated oven for about 60-70 minutes (Expect a bit longer if using frozen blueberries), or until crust is a rich golden brown, and knife inserted into middle of loaf comes out clean.
Let the bread cool slightly before cutting.
Serve warm, or cooled.