In a medium bowl, whisk together 1 cup Plant-based milk, 1 tablespoon Flaxseed meal, 1 tablespoon Maple syrup 1 teaspoon Vanilla extract 1 teaspoon Cinnamon, and 1/8 teaspoon Nutmeg until smooth. Let the mixture sit for 2–3 minutes so the flaxseed thickens slightly and acts as a binder.
Dip each slice of 4 slices Bread into the batter, making sure both sides are fully coated. Let the bread soak for 15–20 seconds per side to absorb enough flavor without becoming soggy.
Lightly grease the air fryer basket with 1 teaspoon Butter or oil. Preheat the air fryer to 370°F (190°C) for 3–5 minutes if your model requires preheating.
Place the soaked bread slices in a single layer in the air fryer basket. Cook for 6–8 minutes, flipping halfway through, until the bread is golden brown and slightly crispy on the outside.
Remove the French toast from the air fryer and serve warm. Top with maple syrup, fresh fruit, powdered sugar, or your favorite vegan toppings.