A made-from-scratch tuna casserole that’s rich, creamy, sophisticated, loaded with flavor and has a crunchy, cheesy topping that will blow your mind. Simple enough to be served as a weeknight meal and elegant enough to serve to guests. Yes, it’s that good.Recipe can be doubled and baked in a 9x13 baking dish.Makes 4 good-sized servings.
Cook pasta 2 - 3 minutes less than package directions in salted water, drain and set aside. Check how to cook pasta.
Meanwhile, in a large skillet, over medium high heat, heat oil and add onions. Sauté until translucent and softened - about 5 minutes.
Stir in minced garlic and sauté until fragrant.
Add mushrooms and cook until mushrooms release their liquid and soften, about 3 -5 minutes. Stir in the horseradish.
Stir in flour, granulated garlic, salt and pepper and cook for about 1 minute. It will be dry but don't worry.
Stir in clam juice, wine and cream. Bring to a simmer over low heat for about 5 minutes to thicken. When it coats the back of a spoon, remove from heat. Taste at this point and adjust for salt and pepper.
Sitr in the cheese then add tuna. Stir to fully combine.
Combine sauce with pasta and transfer into a 2 quart baking dish.
Make topping:
In a small bowl, combine the breadcrumbs, cheese and oil or butter until evenly combined.
Sprinkle topping over the casserole.
Bake for 20 minutes until bubbly. Let it rest 5 - 10 minutes before serving.