Hazelnut Praline Muffins

A few days ago we made our first batch of muffins which we were planning on taking to a family friend to cheer them which ended up with us baking them a t 10 o'clock at night so that they would be ready to take the next morning. However due to the rapid onset of a chest infection we were unable to go, but they most certainly didn't go to waste.
The recipe was more complicated than others we've followed but that made it more of a challenge. They were delicious with a crunchy hazelnut topping (due to the sugar sprinkled on top), light moist sponge and then a surprise to those who hadn't baked them of a centre of nutella. They were lovely and we would recommend them but they weren't the nicest thing we've baked form the book and there are other recipes that have more of an impact.