Preheat the oven to 350°F. Prep an 8 or 9 inch baking dish with butter or baking spray. (I used a round dish, but the shape isn't important)
Scatter the cherries in the bottom of the dish. Coarsely chop the pistachios and set aside.
Mix the remaining ingredients together until smooth. (If using a blender, put all the liquids at the bottom).
Pour the batter over the cherries and scatter the chopped pistachios on top.
Bake until nicely browned on top and a knife inserted into the center comes out clean, about 40 minutes.
If desired sprinkle the top with a little sugar (confectioner's or table sugar is fine).