Pre-heat the oven to 180c.
Cream the butter and sugar until light and fluffy.
Beat in the eggs one at a time, don't worry if it curdles slightly.
Gently stir in the flour.
Scoop the mixture into 12 cupcake liners in a muffin tray.
Share the Nutella evenly between the 12 muffins (If the room is cold, pop the Nutella in a bowl in the microwave for 15 - 20 seconds first to warm it and soften it slightly.)
Use a table knife to create a swirl, making sure that the majority of the Nutella is covered by cake batter.
Bake for 20 minutes until golden and springy.
Enjoy!
Did you make this recipe? Click here to let us know how it went and give it a ⭐️ rating! Your feedback helps us to make more recipes you really want.