The cost per serving below is generated by Whisk.com and is based on costs in individual supermarkets. For more information about how we calculate costs per serving read our FAQS
Store the leftover caramelised onion for 1 week in the fridge. For longer storage, pour into sterilised jars and seal. Store the unopened jars in the pantry for up to 6 months.
Easy to adapt and make it gluten-free by using gluten-free flaky pastry.
Make it vegan by using vegan flaky pastry, vegan cheese and plant-based milk for brushing, omit anchovies.