Prep the custard: In a shallow bowl or pie dish, whisk egg whites, protein powder, almond milk, sweetener, vanilla, cinnamon, and a pinch of salt until smooth. If the protein clumps, whisk vigorously or use a small blender for 10 seconds.
Heat the pan: Place a nonstick skillet or griddle over medium heat.
Lightly coat with nonstick spray or a small pat of light butter.
Soak the bread: Dip each slice into the custard for 10–15 seconds per side. Let the excess drip off. The bread should be saturated but not falling apart.
Cook in batches: Add soaked slices to the hot pan.
Cook for 2–3 minutes per side until golden with lightly crisp edges. Lower the heat if the bread darkens too fast.
Finish and serve: Plate the slices and top with fresh berries, a spoonful of Greek yogurt, and a small drizzle of sugar-free syrup or a light dusting of powdered erythritol.
Optional protein boost: Mix a tablespoon of Greek yogurt with a splash of almond milk and a pinch of sweetener to make a quick high-protein “cream” to spoon on top.