Preheat oven to 350 degrees. Grease a baking sheet with the softened butter. Sprinkle 2 tablespoons of sugar into the baking dish, making sure it is all coated, and then shake out the excess.
Spread the pitted cherries over the bottom of the baking dish.
Add your eggs and sugar to a mixing bowl. Mix until the sugar is mostly dissolved, and the eggs are light and frothy.
Sprinkle in the flour. Mix until just combined.
Add the cognac or rum, vanilla, and salt and mix.
Slowly add in the milk, mixing the entire time until it is incorporated.
Pour the batter over the cherries.
Bake for 45 minutes or until the top is golden brown and a knife comes out clean.
Allow to slightly cool before serving.
Use a fine mesh sieve to sprinkle the powdered sugar over the top. Enjoy!