Set aside 1/2 cup oats. Grind the rest until coarse in a food processor.
Add baking powder, baking soda, cinnamon (optional), salt, eggs, 1 1/2 cups buttermilk, oil or melted butter, honey, and vanilla to the processor. Blend well.
Pour batter into a bowl, stir in reserved oats. Let sit for 5-10 mins to thicken. Add more buttermilk if too thick.
Heat skillet with oil on medium until water sizzles. Reduce to medium-low heat.
Ladle 1/3 cup batter onto skillet, spread into 4-inch circles. Cook for 2-3 mins until bubbles form, then flip and cook 2 more mins until golden brown.
Serve hot with butter, fruit, and syrup. Keep warm in oven if making a lot. Enjoy!