The perfect croque monsieur recipe | Good Food

Ingredients

• 4 slices from a white sourdough or crusty white
• 20g butter melted
• 1 tsp Dijon mustard
• 100g grated gruyère
• 4 thin slices of great smoked ham
• 125ml milk
• 125ml cream
• 1 garlic clove crushed
• 2 bay leaves
• 1 small onion chopped
• 20g butter
• 20g plain flour
• 1 heaped tsp Dijon mustard
• fresh nutmeg grated
• 1 tbsp mayonnaise