Smokey Seafood Casserole

12 oz Nomad Maine made Pasta6 tbsp butter divided4 tbsp olive oil1 lb mushrooms (sliced)1/2 lb fish medley12 oz smoked scallops (Ducktrap or Fox Smoked Seafood)8 oz Donostia’s clams in brine (drained)1/2 lb small shrimp (peeled and deveined)6 tbsp all-purpose...