01 - In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
02 - In a separate bowl, combine the milk, egg, melted butter, and vanilla extract, whisking until smooth.
03 - Pour the wet ingredients into the dry ingredients and stir gently until just combined, avoiding overmixing.
04 - Preheat a nonstick skillet or griddle over medium heat and lightly grease with butter.
05 - Pour ¼ cup of batter per pancake onto the skillet. Cook until bubbles appear on the surface and edges look set, about 2 minutes. Flip and cook another 1 to 2 minutes until golden brown. Repeat with remaining batter.
06 - Spread approximately one tablespoon of chocolate hazelnut spread on each pancake as you stack them.
07 - Finish with chopped hazelnuts, a light dusting of powdered sugar, and fresh berries if desired. Serve warm.