Preheat oven to 375F. Lightly grease a 12-cup muffin tin. Set aside.
In a large bowl, combine 2 cups flour, baking powder, baking soda, salt, and sugar. In a separate bowl, whisk oil, egg, buttermilk, and vanilla until smooth. Fold flour mixture into liquid until just combined. Combine blueberries with remaining 1 tablespoon flour and gently fold into batter.
Fill prepared muffin cups to brim with batter. Bake muffins at 375F 20-23 minutes or until a toothpick inserted in middle of muffins comes out with moist crumbs sticking to it. Cool muffins on a wire cooling rack.
Make the syrup: In a small saucepan, bring all syrup ingredients to a low simmer over medium heat. Serve warm with pancake muffins. Enjoy!