If using oats, place oats in a food processor or blender and pulse until they're a fine powder. Add the remaining ingredients and blend until spoon. Or if using oat flour, add all ingredients to the blender and blend until smooth.
Heat an electric griddle to 350F or a large frying pan to medium heat. Grease the griddle lightly with nonstick cooking spray or oil. Pour about ¼ cup batter onto the griddle or skillet. Allow each pancake to cook on the first side for 2-3 minutes until bubbles form, then flip and continue cooking on the other side for about 2-3 minutes until both sides are golden brown. Repeat until all the batter is used.