Place a small saucepan on the stove on medium heat.
Add butter and milk into the small saucepan.
Dump in the frozen corn stirring often and bring to a low boil.
Once almost boiling, reduce the heat to medium-low and fully cook the corn with the butter and milk.
Sprinkle in a little salt and pepper and serve.
Notes
Use fresh corn on the cob by removing the corn kernels. Add the corn just as you would with frozen. You'll need to cook a little longer to fully cook the corn.
Save leftovers in an airtight container in the refrigerator for 2-3 days
Use plant-based milk and butter if you want to make vegan buttered corn.