Preheat the oven to 350°F. Butter a 7-8 cup baking dish.
In a blender, blend the milk, sugar, eggs, vanilla, salt, and flour until smooth.
Pour the batter into the baking dish. Add the cherries to the batter. Bake for 45 minutes to an hour. The clafouti is done when puffed and brown and a knife plunged in the center comes out clean.
Sprinkle with powdered sugar, serve warm.