During college I didn't have the time to do much fresh baking. I would always use canned mushroom soup to bake tuna casserole. It didn't taste bad, but it would have taste better with freshly diced mushrooms. With that said, here's a healthy mushroom alfredo pasta bake recipe from Pinch of Yum. Feel free to add extra ingredients: such as caramelized onion, bacon, or sausage. I kept mine meatless to keep it light.