WARNING: This is not your typical mud! This tart is made with a special type of mud: delicious Nutella combined with everything light and fluffy for the ideal summertime treat. This creamy filling is topped with a colorful ensemble of fruit - kiwi, strawberry, blackberry, and blueberry - that is sure to wow your guests. And you'll love how simple it is to make! The hardest part is the wait: allow 5-6 hours chill time.