In a large mixing bowl, combine the self-raising flour, baking powder, sugar, ground cinnamon, and salt. Mix well until all the dry ingredients are evenly distributed.
In another bowl, whisk together the melted butter, egg, vanilla extract, and milk until fully combined.
Pour the wet ingredients into the dry ingredients and gently stir until just combined. Be careful not to overmix; a few lumps are perfectly fine!
Preheat your non-stick skillet or griddle over medium heat. Once it’s hot, reduce the heat to medium-low to avoid burning the pancakes.
Using a ladle or measuring cup, pour about ¼ cup of batter onto the skillet. Allow it to cook for about 2-3 minutes or until bubbles form on the surface.
Before flipping the pancake, place a teaspoon of Nutella in the center of the pancake. Pour a little more batter over the Nutella to cover it.
Carefully flip the pancake and cook for another 2-3 minutes on the other side until golden brown.
In a small bowl, mix the sugar and ground cinnamon for the coating.
Once cooked, immediately toss the pancakes in the cinnamon sugar mixture, ensuring an even coating.