Measure out and prepare all the ingredients. Preheat a waffle maker.
In a bowl, crack an egg, add the shredded mozzarella, almond flour, and baking powder. Mix until combined well.
Add the batter into the waffle maker.
Cook until "chaffles" are thoroughly done. Let them completely cool.
Plate one chaffle and add the sliced black forest ham, sliced tomatoes, romaine lettuce, and mayonnaise.
Top with the other chaffle and enjoy your keto chaffle sandwich!
Notes
This makes a total of 1 serving of Keto Ham & Cheese Chaffle Sandwich. Each serving comes out to be 804 calories, 64.4g fat, 7.5g net carbs, and 48.7g protein.