Italian Croque-Monsieur: Pesto and Mozzarella

Ingredients for 4 Croque-Monsieur

  • 8 slices of sandwich bread (wholemeal or traditional)
  • 8 slices of quality cooked ham
  • 200g grated mozzarella (or thinly sliced)
  • 4 medium, ripe tomatoes, sliced
  • 2 tablespoons of pesto (homemade or store-bought)
  • 2 tablespoons of unsalted butter (or olive oil for a lighter version)
  • Salt and ground black pepper to taste