Summarize the following:
Turn off the burner and transfer the garlic butter to small, warm ramekins. Then dip crab or lobster into the sauce. If you'd like to use the sauce as a base for seafood pasta, coat cooked fettuccine with the sauce and stir in cooked seafood. Since the butter will solidify as it's stored, use the garlic butter sauce while it's still warm.

Summary:
Dip seafood into the butter sauce.