Line 9"x 5" loaf pan with aluminum foil. Butter the bottom and sides of the foil. Set aside.

Preheat oven to 375°F.

In large mixing bowl, whisk together flour, baking soda and powder, and salt.

Add blueberries and stir to distribute.

In another bowl whisk egg, buttermilk, vanilla, oil, and sugar,

With a rubber spatula, fold in wet ingredients to dry ingredients. Do not overmix. Few flour lumps are okay.

Pour batter into pan.

Bake bread for 33 to 38 minutes, or until top is golden brown and toothpick inserted comes out clean.

Cool completely in pan. .