Involtini Di Vitello Al Formaggio Grana Padano

• 5 prosciutto
• 1 carrot
• 1 cellery heart
• 1 onion
• 120 ml dry wine (white)
• 80 gr grana padano cheese
• 120 ml chicken broth
• 75 ml extra-virgin olive oil
• 45 gr tomato paste
• 45 gr butter