Preheat your oven to 350°F.
In a large mixing bowl, combine the blueberries, sliced apricots, 1/2 cup of sugar, lemon juice, and vanilla extract. Toss gently to coat the fruit and set aside.
In another bowl, whisk together the flour, baking powder, salt, and remaining 1/2 cup of sugar.
Pour in the melted butter and milk, stirring until just combined.
Pour the fruit mixture into a greased 9x13-inch baking dish.
Spoon the batter over the fruit, spreading it evenly.
Sprinkle the ground cinnamon on top.
Bake for 40-45 minutes or until the top is golden brown and a toothpick inserted into the batter comes out clean.
Allow the cobbler to cool for about 10 minutes before serving.