Start by pitting the cherries. You can cut them in half or leave them whole, as you prefer.
Whisk together the batter ingredients until smooth. Start with eggs, milk and sugar, then adding the flour bit by bit. You can do this by hand, using a mixing bowl and a whisk, or in the blender.
Lay the cherries in the bottom of a well-buttered round baking dish. They should cover the bottom entirely.
Now pour the batter gently over the cherries, taking care not to displace them.
Bake in a moderate (180C/350F) oven for until cooked through and ever so slightly golden on top, usually about 30-40 minutes. Remove from the oven and let cool for at least 15 minutes. The batter will puff up considerably while baking, then settled down as it cools.
Serve slightly warm or at room temperature, dusted with powdered sugar.