
Preheat the oven to 300°F. Line a baking sheet with parchment paper.
Separate the eggs, placing the whites in a medium bowl and the yolks in a separate small bowl.
Add the cream of tartar to the egg whites and beat with an electric mixer on medium until stiff peaks form, 1 to 2 minutes. Set aside.
In a large bowl, beat the cream cheese with an electric mixer on medium-high until smooth, about 1 minute. Add the egg yolks and salt and beat until well combined, about 1 minute. Using a spatula, fold the meringue into the cream cheese mixture until just incorporated.
Divide the mixture into 6 mounds (about ⅓ cup each) on the prepared baking sheet, spacing them at least 3 inches apart. Spread each mound into a 3½-inch circle.
Bake for 25 to 30 minutes or until golden brown. Let the bread cool completely on the baking sheet, about 15 minutes, before serving.