Preheat your oven to 375 degrees Fahrenheit. Line your 9×5-inch loaf pan with parchment paper or lightly butter your loaf pan. In a small bowl, toss blueberries with 1 tablespoon flour to keep blueberries from sinking.
In a large bowl, whisk 2 cups flour, sugar, baking powder and salt. In a separate bowl, mix yogurt, eggs, melted butter and vanilla together and then fold into the dry ingredients. Add the blueberries and oats and gently combine.
When done, scrape the mixture to loaf pan and it will be thick and a little sticky. Bake for 50-55 minutes when golden brown and when a toothpick inserted into the bread comes out clean. Remove from oven and cool in the pan for 5 minutes then cool on a wire rack. Serve warm or at room temperature.