Croque madame traybake

1. To make the béchamel sauce, add the butter to a medium sized saucepan over medium heat. When the butter begins to melt, add the flour and cook, stirring continuously, for 2 – 3 minutes. 
2. Slowly add the milk, whisking continuously to avoid any lumps. Once all milk is added and the sauce has thickened, season generously with salt and pepper and stir through 1 tbsp of mustard and half of the cheese. 
3. Spread 1/3 of the sauce in the bottom of a lasagne-sized baking dish. Place 6 slices of bread in a single layer in the bottom of the dish. Evenly spread the remaining mustard on the slices of bread and top with the ham. Spoon a couple of tablespoons of the sauce over each sandwich, and sprinkle with cheese. 
4. Top with the remaining 6 slices of bread and press down gently to sandwich securely together. Spread the remaining sauce on top of the sandwiches and sprinkle over the remaining cheese. 
5. Place in the oven at 200°C for 20 minutes, or until the top is golden and bubbling. 
6. When it has 5 minutes left in the oven, fry the eggs in a large non-stick frying pan over medium heat for 3 minutes or until yolks are set.
7. Place a fried egg on top of each sandwich and serve immediately.

Top tip:

Try adding sautéed mushrooms in place of ham for a tasty veggie version!