3/4 cup oat flour (you can make this by pulsing rolled oats into a food processor or spice grinder until finely ground; 1 cup of oats yielded 3/4 cup oat flour for me)
1 cup all-purpose flour
2 tablespoons sugar
2 teaspoon baking powder
3/4 teaspoon Kosher or coarse salt
3 tablespoons unsalted butter, melted and cooled slightly (plus extra for the pan)
1 1/4 cups whole milk
1 cup cooked oatmeal*
1 tablespoon unsulphured (not blackstrap) molasses or 1 tablespoon honey
2 large eggs
Whisk the dry ingredients (oat flour, flour, sugar, baking powder and salt) together in a large bowl. In a smaller bowl, whisk the butter, milk, cooked oatmeal, honey and eggs together until thoroughly combined. Gently fold the wet ingredients into the dry ingredients. Using a light hand is important for tender pancakes; the batter should be slightly thick with a holey surface.
Heat a 10-inch cast-iron pan or griddle over medium heat until water sizzles when splashed onto the pan. Lower to medium-low. Rub the pan generously with butter; this is the key to crisp, buttery edges. Working quickly, dollop 1/4-cup mounds of batter onto the pan, 2 or 3 at a time. Once bubbles have begun to form on the top side of the pancake, flip the pancake and cook until the bottom is dark golden-brown, about 5 minutes total. Wipe the pan with a cloth before griddling the next pancake. Continue with the rest of the batter.
Serve the pancakes hot, straight from the skillet or keep them warm in a low oven. Makes about 18 pancakes
Do ahead: Although the batter is best if using immediately, it can sit for up to 1 hour on the counter or overnight in the refrigerator. When you return to the batter, it will be very thick and should be thinned, one tablespoon at a time, with milk. Take care not to overmix.
* Make oatmeal, if you don’t have any leftover: Bring 2 cups of water, 1 cup of rolled oats and a pinch of salt to a boil and simmer on low for 5 minutes. Let cool. You’ll have some extra oatmeal, which you can eat while you’re cooking.