Preheat the oven to 350 degrees. In a large cast iron pan (with a lid) - we used the 30-inch Le Creuset Braiser,  melt butter and saute the onion or shallot for 2-3 min.
Add the frozen veg and cook for another 2 min on medium until cooked.
Add both cans of coconut milk, mix together, then add in the pasta and 1.5 cups of cheese.
Pop in the oven with the lid on for 30 minutes.Â
Remove from the oven, gently flake in large chunks of the tuna. Stir to combine. Sprinkle with the remaining cheese and the bread crumbs.
Put it back in the oven for 15-20 minutes until the cheese is melted and the breadcrumbs are golden brown!Â
Set it for about 10 minutes, and then serve with some fresh dill! Yum!