Watercress and spinach roulade with bacon

Ingredients

• 60g butter
• 1/3 cup flour
• 1 cup milk
• 1 cup watercress, chopped finely
• 250g frozen spinach, thawed and heated until evaporated
• 1/3 cup parmesan
• 4 egg yolks
• 4 egg whites
• 4 rashers bacon, chopped
• 1 clove garlic, crushed
• 185g can pimentos, drained, sliced
• 2 tablespoons basil, chopped
• 250g cream cheese, beaten until smooth
• 2 tablespoons cream