Preheat an electric griddle to 375ºF or a large frying pan over medium-low heat.
Melt the butter then whisk together the butter and the egg in a medium-large mixing bowl. Whisk in the buttermilk.
Add in the oat flour, ground flax seed, sugar, and baking powder. Whisk until smooth.
Allow to rest for 5 minutes.
The batter will be fluffy and thick.
Pour about ¼ cup batter onto the preheated griddle/pan. Cook until a medium golden brown on the first side.
Flip and cook one minute further.
Notes
If you don’t have pre-ground oat flour, you can add regular or quick cooking oats to a blender and blend on low to create an oat flour. Approximately 1 ½ cups oats will yield 1 ¼ cup oat flour.
Makes about 10 pancakes using 1/4 cup of batter for each pancake.