Blend the Ingredients: Place the oats in a blender and blend on high until they become a fine flour. Add the milk, eggs, vanilla extract, baking powder, cinnamon, salt, and maple syrup (if using). Blend until smooth, about 30 seconds.
Heat the Pan: Heat a non-stick skillet or griddle over medium heat and lightly grease with butter or oil.
Cook the Pancakes: Pour about 1/4 cup of the batter onto the skillet for each pancake. Cook for 2-3 minutes or until small bubbles form on the surface. Flip and cook for another 1-2 minutes, or until golden brown and cooked through.
Serve: Serve the pancakes warm with your favorite toppings like fresh fruit, more maple syrup, or yogurt.