These are such a quick and easy savoury bite to make - think of them like mini pesto mozzarella pizzas! I could eat about ten in one go!
They look so effective with the heart mozzarella and heart-shaped tomato too! Plus they take less than 20 minutes from making to eating - and that's always a winner in my book! I hope you enjoy them - and if you're looking for where to buy the small heart cookie cutters - you can find them here*: https://www.amazon.co.uk/shop/theglutenfreelifeforme under the Mad Hatter's Tea Party section!
It's actually easier to pipe the pesto onto your mozzarella using a piping bag, rather than using a spoon or knife, to keep the edges of your tart clean!