In a large bowl, whisk together the 2 cups oat flour, 2 teaspoons baking powder, ½ teaspoon ground cinnamon, and ½ teaspoon fine sea salt until combined.
In a medium bowl, whisk together the 3 tablespoons unsalted butter, 1 ¼ cups whole milk, 1 cup plain cooked oatmeal, 2 tablespoons maple syrup and 2 large eggs until well combined.
Fold the wet ingredients into the dry ingredients gently — you don’t want to over mix. Batter should be slightly thick with a bubbly surface.
Heat a non-stick or cast-iron pan over medium heat until a drop of water sizzles when splashed onto the surface of the pan. Add a generous pat of butter and, working quickly, dollop ¼-cup mounds of batter onto the pan. Cook until bubbles form on the surface of the pancakes, then flip and cook and cook until the bottom is a dark golden-brown, about 5 minutes. You may need to adjust the heat lower. Wipe the pan with a cloth or paper towel (carefully!) before cooking the next batch. Serve hot.
Notes
To make with wheat flour - Substitute 1 ¾ cups whole wheat flour or a mix of whole wheat and white flour. You can also make this just with all purpose flour.
To make dairy-free - Use coconut oil and substitute your favorite non-dairy milk for the milk.
For perfectly cooked pancakes: Cook the pancakes on a lower heat until the top begins to bubble, then flip them over and cook a few minutes more until they're deep golden brown.
Heat the pan enough. Set the pan over medium heat, let it heat for a few minutes, then flick a few drops of water on the surface. If they sizzle and disperse, the pan is ready for the pancake batter. If the pan isn't hot enough, the pancakes will cook unevenly.
Grease the pan well. Don't skimp on greasing the pan! This will help the pancakes to flip easily.
Double up. This recipe easily doubles or even triples if you wish to make a larger batch of pancakes to feed a crowd or to have enough for leftovers later in the week.