Butter for the pan
2 cups all-purpose flour
1 cup granulated sugar
2 teaspoons baking powder
1/4 teaspoon table salt
2/3 cup vegetable oil
1 cup milk
2 large eggs
3 cups blueberries, fresh or frozen
Preheat oven to 350° and butter a 9x13-inch baking pan.
In a medium bowl, whisk together the flour, sugar, baking powder, and salt. Add the oil, milk, and eggs. Mix with an electric mixer for 3 minutes.
Pour the batter into the prepared pan, then evenly sprinkle the blueberries on top.