1. Preheat oven to 375°.
2. Lightly coat an 11 x 7inch baking dish with cooking spray, and dust with breadcrumbs. Set aside.
3. Heat a large nonstick skillet over medium heat; coat pan with cooking spray. Add garlic and cook 20 seconds, stirring constantly. Add spinach and cook 3 minutes or until spinach wilts, stirring occasionally. Remove from heat; cool slightly. Place spinach mixture on several layers of heavy-duty paper towels, and squeeze until barely moist. Place spinach mixture in a blender. Add milk and cornstarch; process until smooth. Add cheese and next 3 ingredients; pulse until well blended. Pour into a large bowl.
4. Place egg whites and egg in a large bowl; beat with a mixer at high speed 5 minutes or until tripled in volume. Gently fold one-fourth of egg mixture into spinach mixture; gently fold in remaining egg mixture (mixture will seem slightly thin). Spoon spinach-egg mixture into prepared baking dish, and smooth top with a spatula.
5. Bake at 375° for 35 minutes or until center is set. Cool 5 minutes on a wire rack before serving.
for your toddler:
Serve a spoonful of the soufflé on a plate or in a small bowl with a spoon.