Ina shallow flat bottomed bowl, crack the egg and add sugar and milk. Using a fork, whisk it.
Apply a thick layer of Nutella on one bread using 2 tsp of chocolate spread.
Cover that with the other bread slice, making a sandwich.
Carefully place this sandwich in the bowl with the egg.
When one side has soaked enough egg, carefully flip and let the other side soak in all the egg.
Heat a frying pan. Let it become hot and then add a dollop of butter and let it melt. Don't add the butter first and heat cos then the butter will burn.
Gently slide the chocolate sandwich into the frying pan.
Keep the heat at medium to low or else the butter will burn fast and become brown.
Once one side has crisped up, flip and cook the other side.
When both sides are brown and crispy, take the French toast out of the pan and on a kitchen towel to soak the excess butter.
If you are making another set of French toast, you need to wipe the pan with tissue paper to take out the brown burnt butter before making a fresh batch.
Cut the sandwich in a triangle. Drizzle more Nutella and dust icing sugar if you want. Serve with some cut up strawberries.