01 - Whisk flour, sugar, baking powder, baking soda, and salt together in a large bowl.
02 - In a separate bowl, whisk whole milk, egg, melted butter, and vanilla extract until smooth.
03 - Pour wet ingredients into dry mixture and stir gently until just combined; avoid overmixing.
04 - Heat a nonstick skillet or griddle over medium heat and lightly grease with butter.
05 - Pour 1/4 cup batter per pancake onto skillet. Cook until bubbles appear and edges set, about 2 minutes. Flip and cook 1–2 minutes until golden. Repeat with remaining batter.
06 - Spread one tablespoon of chocolate hazelnut spread over each pancake as you stack them.
07 - Sprinkle chopped hazelnuts, dust with powdered sugar, and add fresh berries if desired. Serve warm.