Keju Panggang Fontina, Cheddar, dan Gruyère dengan Sayuran Panggang

Bahan-bahan (2 porsi)

• 1 medium yellow flesh potato
• 2 large carrots
• 1 sprig fresh rosemary
• 1 sprig fresh thyme
• 1 tbs. olive oil
• sea salt and pepper to taste
• 3 types of white, soft cheese (Gruyère, Raclette, Swiss, Gouda, Provolone, Fontina, White Cheddar, etc.)
• 4 slices thick, sturdy wheat bread
• 2 tbs. butter