Le gratin de pomme au miel de lavande et sa croûte aux amandes

Name: Le gratin de pomme au miel de lavande et sa croûte aux amandes (Apple gratins with lavender honey and almond croûtes)
Cuisine: French
Ingredients: 3 tablespoons lavender honey; butter; 3 egg whites; 2 eggs; 1 packet vanilla sugar; 100 g/4 oz caster sugar; 60 g/2½ oz plain flour; 60 g/2½ oz butter, melted; 450 ml/¾ pint milk; 125 g/5 oz chopped almonds; 4 tablespoons caster sugar; ½ teaspoon vanilla extract; ¼ teaspoon salt; 4 egg yolks; 4 large Golden Delicious apples