1Using a food processor, chop the pecans finely and add the dates, maple syrup and salt. Press into individual molds or a large mold. 2For the vanilla yogurt, mix Oikos Greek yogurt with maple syrup, vanilla and lemon zest. 3For the caramelized apples, in a frying pan, heat the syrup and caramelize the apples. 4Top tart bases with yogurt and caramelized apples.