Beat eggs by machine with whisk attachment until thick and light.

In an electric mixer fitted with whisk attachment, beat butter until creamy.

In a separate bowl, beat 2 egg whites on medium speed with whisk attachment until foamy.

In the bowl of a mixer fitted with a whisk attachment, beat cream cheese and sugar for 2 minutes.

Return bowl to the mixer fitted with the whisk attachment.

Place the egg whites in the bowl and, with the whisk attachment, start to whip at medium speed.

Beat with whisk attachment at medium speed until very light and fluffy, about 2 minutes.

At high speed, preferably with a whisk attachment, beat in eggs one at a time.

Beat egg whites by machine, using a whisk attachment, until very softly peaked.

Place egg white in bowl of standing mixer fitted with whisk attachment, and set aside.