Spread the Nutella over two of the bread slices, then press the other slices on top to create a sandwich.
Beat the eggs, crème fraîche, cardamom and sesame seeds together and pour into a flattish container.
Dip the sandwiches into the mixture, first one side then the other.
Add the butter and oil to a frying pan over a medium low heat.
Place one sandwich into the pan and fry for 3 minutes or so until golden, then turn over and fry the other side. Repeat with the other sandwich and eat whilst hot.
Notes
Please note: calories and other nutritional information are per serving. They’re approximate and will depend on serving size and exact ingredients used.