Spinach and mushroom souffle – Augusta Health

Ingredients

• 1/2 cup panko bread crumbs
• 1/2 teaspoon unsalted butter
• 6 cups spinach, stems removed
• 2 cups crimini mushrooms, chopped
• 1/4 teaspoon salt and ground black pepper, mixed
• 1 1/3 cup skim milk
• 1 1/2 tablespoons cornstarch plus 3 tablespoons cold water
• 1/4 cup Gruyere cheese
• Pinch of ground nutmeg
• 3 egg whites