Fill a large saucepan halfway with water and bring it to a rolling boil over medium-high heat.
Gently place the frozen corn into the boiling water, cover the saucepan, and wait for the water to boil again. Once boiling, uncover and cook the corn for 5 minutes or until the kernels are tender.
Carefully remove the corn from the water and let it dry on a cutting board. Serve the corn on a plate with a generous spread of butter on each cob.