Preheat your oven to 350°F (175°C). Grease a loaf pan.
In a mixing bowl, whisk together the gluten-free flour, sugar, baking powder, and salt.
In another bowl, mix the milk, vegetable oil, eggs, and vanilla extract.
Combine the wet ingredients with the dry ingredients until just mixed.
Fold in the blueberries gently.
Pour the batter into the prepared loaf pan.
Bake for 50 minutes or until a toothpick inserted into the center comes out clean.
Let the loaf cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.