Grease a 2 qt. baking dish with 1 tbsp butter. Arrange fish filets in baking dish. Blend salt, Tabasco Sauce, paprika, and cheddar cheese into sour cream and spread over fish. Top with bread crumbs and dot with remaining 3 tbsp butter. Bake uncovered at 350°F for 30 min. or until fish flakes easily with fork.