Scallops with butter

24 asparagus spears , trimmed 2 tablespoons flour 1/2 teaspoon Old Bay Seasoning 1/2 teaspoon paprika 3 tablespoons butter , divided 1 lb sea scallops ,[...]

5 tablespoons butter 2 tablespoons olive oil 1 large sweet onion (such as Vidalia or Maui), halved, thickly sliced crosswise 4 garlic cloves, minced 24[...]