Preheat the waffle maker: Heat a mini waffle maker or standard waffle iron until fully hot. A hot surface is key for a crisp result.
Mix the batter: In a small bowl, whisk 1 large egg until smooth. Add 1/2 cup shredded mozzarella, 1 tablespoon almond flour, 1 tablespoon softened cream cheese, 1/4 teaspoon baking powder, and a pinch of salt.
Stir until well combined and no big cream cheese lumps remain.
Flavor it: For sweet chaffles, add 1/2 teaspoon vanilla and a pinch of cinnamon, plus 1–2 teaspoons keto sweetener if desired. For savory, add 1/4 teaspoon garlic powder and a pinch of black pepper or chopped chives.
Grease the iron: Lightly spray with avocado oil or brush with melted butter. Don’t overdo it—just a thin coat.
Cook: Spoon half the batter into a mini waffle maker (or use enough to cover the plates thinly in a standard iron).
Close and cook for 3–4 minutes, until steam subsides and the chaffle is deep golden and crisp.
Cool briefly: Transfer to a wire rack for 1 minute. This helps moisture escape and keeps the edges crispy.
Repeat: Cook the remaining batter the same way. Adjust time slightly if your iron runs hotter or cooler.
Serve: Add your favorite toppings and enjoy immediately, or keep warm in a low oven (200°F/95°C) on a rack.