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Cheesy Tuna Casserole

Cheesy Tuna Casserole

1 lb small shell pasta
1-1/2 cups sour cream
1/2 cup mayonnaise
3/4 cup milk
1/2 cup grated Parmesan cheese
1 Tb Dijon mustard
1/2 tsp kosher salt
1/4 tsp pepper
1 cup frozen peas
2 6oz cans tuna, drained
1/2 cup sliced green onion
1 cup grated cheddar cheese

Boil pasta according to package directions, drain.

In a large bowl, mix sour cream, milk, mayonnaise, Parmesan cheese, mustard, salt, pepper, peas, and tuna. Stir in pasta until everything is combined. Transfer to a 9×13″ casserole dish.

Cover with foil and bake in a 350 degree oven for 40 minutes. Uncover, sprinkle with one cup of grated cheddar cheese and put in the oven for another five minutes, until cheese is melted. Serve.

Makes six (very generous!) servings.