Preheat your oven to 395°F (200°C). Grease and flour an 8x12-inch baking dish.
Combine the flour, sugar, and baking powder in a large mixing bowl.
Add the eggs, melted butter, and 3/4 cup milk to the flour mixture.
Combine all the ingredients using a mixer.
Pour 1/2 of the batter into the prepared baking dish and spread it out evenly.
Drain the sour cherries and gently fold them into the cake batter in a single layer until evenly distributed.
Add 1/2 cup milk to the second half of the batter and mix well with a spoon or rubber spatula.
Pour this mix over the sour cherries until evenly distributed.
Bake in the preheated oven for 45-50 minutes or until a toothpick inserted into the center of the cake comes clean and the top is a nice golden brown color.
Once baked, remove the cake from the oven and allow it to cool in the baking dish.
Once cooled, slice the cake, sprinkle powdered sugar, and serve on a serving plate. Enjoy your delicious sour cherry cake!