The Blueberry Blossom Pancake

Name: The Blueberry Blossom Pancake
Ingredients: 3/4 cup pure maple syrup; 1/4 cup blueberries; 1/2 cup old-fashioned oats; 1/4 cup all-purpose flour; 2 tablespoons light brown sugar; 1/4 cup (1/2 stick) unsalted butter, melted; 1 cup all-purpose flour; 2 tablespoons sugar; 1 tsp baking powder; 1/2 tsp baking soda; 1/2 tsp kosher salt; 1 large egg; 1 1/2 cups buttermilk; 2 tablespoons unsalted butter, melted, slightly cooled; Vegetable oil (for skillet); 1 cup blueberries (about 5 ounces)