In a small serving bowl, place butter, garlic, parsley, and lemon juice.
Microwave, uncovered, on HIGH (100%) for 1 minute or until butter is melted; set aside.
Arrange clams in a circle on a flat 10 inch plate.
Cover with pleated plastic wrap.
Microwave on HIGH (100%) for 3 to 5 minutes or until shells pop open.
If any are not yet open, lift out opened clams and microwave remaining clams on HIGH (100%), checking at 30 second intervals.
Serve in shells with garlic butter.