Mix flour and baking powder together in a small bowl.

Mix milk, egg, and 2 tablespoons vegetable oil together in a large bowl.

Stir flour mixture into milk mixture until batter is smooth. Set aside to allow batter to thicken, about 1 minute.

Heat about 1 teaspoon vegetable oil in a skillet or griddle over medium heat.

Drop batter by large spoonfuls onto the griddle, add blueberries, and cook until bubbles form and the edges are dry, 3 to 4 minutes.