Mix Dry Ingredients: In a large bowl, whisk together chestnut flour, baking powder, and salt.
Prepare Wet Ingredients: In a separate bowl, whisk the egg, milk, olive oil, and vanilla extract (if using) until smooth.
Combine: Gradually pour the wet mixture into the dry ingredients while stirring to create a smooth batter. Adjust with a little milk if the batter feels too thick.
Heat the Pan: Place a non-stick pan on medium heat and lightly grease with butter or olive oil.
Cook Pancakes: Pour a small ladle of batter into the pan. Cook for 2-3 minutes until bubbles form and the edges start to lift. Flip carefully and cook the other side for 1-2 minutes until golden.
Repeat: Continue with the remaining batter, greasing the pan as needed. Keep the pancakes warm on a plate until all are done.
Serve: Top with fresh fruit, honey, syrup, or powdered sugar for a sweet treat, or pair with savory sides like cheese or cured meats.