Heat waffle iron according to manufacturer’s instructions to high setting, if possible.
In a medium bowl, whisk together flour, cornstarch, ground pecans, sugar, baking powder, baking soda, salt, and cinnamon. Toss blueberries in flour mixture to coat.
In a separate medium bowl, stir buttermilk, egg, oil or melted butter, and vanilla extract. Add to dry ingredients, and stir until flour is incorporated.
Spray waffle iron with nonstick spray, or brush lightly with oil. Spoon batter into waffle iron, and cook according to manufacturer’s directions. Serve immediately.
Notes
Note: Fresh blueberries work best for this recipe, as frozen ones tend to stick. Regular milk cannot be substituted for buttermilk.
Recipe by Victoria at https://victoriamag.com/blueberry-pecan-waffles-recipe/