1. Add pasta into saucepan of boiling water.
2. While pasta is cooking, add oil, onion and garlic into a saucepan. Stir until cooked through and slightly brown.
3. Drain the tuna and add to the saucepan with onion. Stir until all mixed through.
4. Add cooking cream to pan and stir until well combined. Add parmesan, parsley, salt and pepper.
5. Continuously stir until sauce starts to thicken.
6. Drain pasta, add to sauce and stir.
7. Serve with parmesan cheese.