Cook your pasta until al-dente. Do remember to reserve <g class="gr_ gr_201 gr-alert gr_tiny gr_gramm Grammar only-ins doubleReplace replaceWithoutSep" id="201" data-gr-id="201">½</g> cup of the cooking water.
Heat olive oil in a pot and brown the onion.
Add in garlic and sun-dried tomatoes.
Pour the canned tomatoes and cook for 10 minutes till <g class="gr_ gr_199 gr-alert gr_gramm Grammar only-ins replaceWithoutSep" id="199" data-gr-id="199">sauce</g> thickens.
Add in your tuna and season with paprika, salt and black pepper.
Pour in cream and some pasta water.
Add in olives, herbs and top with shaved parmesan.