Preheat oven to 375°F. Grease 9x13 baking dish.
Cook noodles according to package directions, slightly undercooked.
Meanwhile, heat oil in large skillet. Cook onion and celery until soft.
Add garlic, cook 1 minute more.
In large bowl, mix soup, milk, vegetables, tuna, cheese, and seasonings.
Add cooked noodles, stir to combine.
Transfer to baking dish.
Mix breadcrumb topping, sprinkle over casserole.
Bake 20 to 30 minutes until bubbly and golden.