Prepare the recipe for Glazed Apples if you are going to use them.
Add the egg whites to a large mixing bowl, use an electric mixer and beat the whites until stiff peaks form, set aside.
In another mixing bowl, add the yolks, beat with an electric mixer until lemon colored. Beat in ½ cup sour cream and the salt.
Preheat your oven to 160° C (325° F).
Fold in the egg whites and ham.
Heat the butter in a 10 inch oven proof pan, pour in omelet mixture and gently level. Cover and cook on low heat until lightly browned on the bottom, about 5-7 minutes.
Place pan in the oven and bake until the top is golden brown, about 12 minutes.
Loosen omelet with a spatula and slide onto a serving plate. Cut into wedges.
Garnish with the remaining ½ cup sour cream and Glazed Apples if desired.