Whisk together all dry ingredients (sugar, salt, flour, baking powder) in a medium bowl. Make sure it is smooth, without any lumps.
In another bowl, whisk together the Nutella, eggs, blueberries, and milk together into a fine mixture. If you are having trouble mixing everything, try adding a touch of melted unsalted butter in the center. This will help warm the mixture and make it easier to move around.
Pour the wet mixture in the bowl with dry ingredients and combine everything with a whisk. Alternatively, you can use an electric mixer to make it as smooth as possible.
(Optional) Pour the entire batter into a large measuring cup. This will make it easier to portion pancake sizes on the skillet.
Preheat a griddle pan or skillet on medium low heat.
When ready, lightly grease the pan with your cooking spray or unsalted butter. Pour some batter and form a circle no more than 6 inches in diameter in the pan’s center.
When the bottom appears cooked and golden-brown, flip the pancake with a spatula. When both sides are thoroughly cooked and the edges appear crispy, remove it and place it on a dish.
Repeat steps 6-7 until the batter is completely gone, then turn off the stove.
Serve stacked with any syrups or toppings of your choice.