Why do you put eggs in a lemon meringue filling?

You do not put eggs in a lemon meringue filling. A lemon meringue filling typically consist of lemon juice, sugar, cornstarch, butter, and vanilla extract. The meringue component is made separately by whipping egg whites and gradually adding sugar until stiff peaks form. The meringue is then folded into the cooled lemon filling and used to top pies or tarts.