3tablespoonsunsalted butter, melted, plus additional for frying (42 grams)
½teaspoonsvanilla extract
⅔cupbuttermilk, well shaken (158 ml)
1large egg
Instructions
In a bowl, combine the all-purpose flour, oats, sugar, baking powder, baking soda, and salt. Add the melted butter, vanilla extract, buttermilk, and egg and mix until batter is smooth.
Preheat a cast iron skillet or frying pan over medium heat. Melt about ½ tablespoon butter in the pan. Pour ⅓ cup of the batter into the pan and spread into a rough circle. Flip the pancake when bubbles pop in the surface and the edges appear dry, about 2 minutes. Cook for 1 minute on the other side. Repeat with the remaining batter, adding more butter to the pan as necessary.
Keep pancakes warm under a clean towel or in a 200°F oven until ready to serve.