Preheat the oven to 200 degrees Celsius.
Put the flour, salt, and yeast in a bowl and mix them well.
Melt the butter and put it in another bowl with the milk, sugar and eggs.
Mix them all together. Don't mix to much. Keep the texture sort of rough and bumpy. Don't make it liquid.
Put them in the cups and put some Nutella on each. Then use your finger to sink the Nutella inside it.
Put them in the oven for 15 minutes.