Preheat your oven to 350°F (175°C). Lightly grease a 9x9-inch baking dish with butter or cooking spray.

In a large bowl, whisk together the self-rising flour, granulated sugar, salt, and cinnamon.

Pour in the melted butter, whole milk, and add the vanilla extract, mixing until the batter is smooth and combined.

Pour the batter evenly into the prepared baking dish.

Evenly sprinkle the fresh blueberries across the batter.

Sprinkle a generous amount of granulated sugar over the top of the batter, about a ¼ cup.

Bake for about 40–45 minutes, or until the top is golden brown and set. A toothpick inserted into the crust should come out clean. Remove from the oven and let cool for about 5-10 minutes.

Serve warm with a scoop of vanilla ice cream and garnish with fresh mint if desired. Enjoy!