Pre-heat the oven to 350°F.
Grease and flour a 9-inch round pan that's at least 2-inches deep; line the bottom with a round of parchment paper; an 8-inch x 8-inch square baking dish also works well.
If using frozen cherries, allow them to thaw for at least 20 minutes, or more, before using.
In a large mixing bowl, blend together the sugar and corn starch.
Add the cherries; toss until well coated with the sugar and corn starch mixture.
Spread the cherries evenly over the bottom of the prepared pan.