Melt the Butter: In a small pan over low heat, melt the butter. Keep an eye on it to prevent browning.
Add Lemon: Stir in the lemon juice and zest, letting the sauce warm for a minute or two to combine.
Season: Add salt and pepper to taste, then remove from heat.
Notes
Adjust the salt level to your taste. The right amount of salt is what you like in your dish.Add any herbs you like to this lemon butter sauce. Chop them finely and add them in right before you take it off the heat.