In a medium bowl, beat together mascarpone cheese, cream, confectioners’ sugar, and vanilla extract until combined and smooth. Spread an even layer of mixture into each prepared Tartlet Shell.
In a large bowl, gently toss together blueberries, raspberries, blackberries, and Lemon-Tarragon Syrup. Divide fruit mixture among prepared Tartlet Shells. Serve immediately.
Garnish with fresh mint sprigs, if desired.
Recipe by TeaTime Magazine at https://teatimemagazine.com/fruit-tartlets-with-lemon-tarragon-syrup/