Preheat oven to 300°F. Line baking pan with parchment paper or silicone liner.
Separate the eggs into separate bowl.
Add the cream cheese and salt to the yolks. Blend well with an electric mixer.
Sprinkle cream of tartar on the egg whites if desired. Whip with a clean electric mixer until very stiff.
Using a spatula, gradually fold the egg yolk mixture into the white mixture. Try not to break down the egg white, you want it to stay fluffy.
Spoon 6 mounds of the mixture onto the prepared baking pan. Flatten each mound slightly.
Bake for about 25-30 minutes. Do not over bake or they can become crumbly.
Cool on the baking pan for 3-5 minutes, then transfer to a cooling rack.
To keep soft, store them in a big zipper bag. Storing in the refrigerator or freezer keeps them fresh longer.
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Notes
You can find great tips for trouble free Oopsie Rolls here. And, there are tons of recipe variations on Your Lighter Side.The rolls are more bread like when the egg whites are beaten until very stiff. The cream of tartar is preferred to help keep them stiff.It's not recommended to double the batch as the heavier amount of yolks can flatten the egg whites easily. It's best to use only 3 eggs each time.To keep the proper egg fast ratio, you'll want to spread ½ tablespoon butter onto each roll.For thicker burger buns, reduce the cream cheese to 2.5 ounces and mix in ¼ cup of almond flour to the egg yolk mixture.