Keto Sandwiches

Name: Ham, Egg, And Cheese Sandwich
Prep time: 30 min
Cook time: 5 min
Total time: 35 min
Ingredients: 1 large egg (separated); Pinch cream of tartar; Pinch salt; 1 ounce cream cheese (softened); 1 large egg; 1 teaspoon butter; 3 ounces sliced ham; 1 slice cheddar cheese