1/2 tsp pure vanilla extract (TRY: Rodelle Pure Vanilla Extract)
3 red or black plums, pitted and cut into thin wedges
Preheat oven to 350°F. Mist a 10-inch tart pan with cooking spray.
In a large bowl, mix flour, Sucanat, baking powder, cinnamon, cardamom and salt. In a medium bowl, whisk egg, buttermilk, butter and vanilla. Add liquid to flour mixture and stir to combine.
Add batter to pan and smooth surface with a spatula. Gently lay plums over surface, overlapping slightly. Bake for 35 to 40 minutes, until edges are golden brown and a toothpick comes out clean when inserted in center. Transfer to a wire rack to cool completely.