Tuna Noodle Casserole Recipe

0 Heat a skillet on the stovetop over medium heat.
1 Coat the tuna steaks with olive oil and season with sea salt.
2 Add the steaks to the skillet and cook for 3 to 4 minutes, until a slight crust forms on the bottom, then flip and cook for 3 to 4 minutes on the second side. Once cooked, transfer the tuna steaks to a cutting board and coarsely chop them into 1/2-inch pieces.
3 Preheat the oven to 350°F.
4 Bring a large pot of water to a boil. Cook the noodles according to the package instructions.
5 While the noodles are cooking, in a large Dutch oven or other oven-safe pot, melt the butter over medium heat. Add the onion, garlic, and mushrooms and cook, stirring, for 4-5 minutes, until the onion and mushrooms have reduced in size. Add the flour and stir to combine. Slowly whisk in the milk and broth until smooth.
6 Add the tuna, peas, salt, and pepper and bring to a low boil.
7 When the pasta is done cooking, drain it and add it to the pot. Stir gently to combine.
8 Top with the cheese and transfer the pot to the oven. Bake for 20 minutes, or until hot and bubbling. Remove from the oven, garnish with the parsley, and serve.