Preheat your oven to 350°F (175°C).
Grab a 9x13-inch baking dish and dump in both cans of cherry pie filling. Spread it out like frosting on a birthday cake.
Sprinkle the dry cake mix evenly over the cherries. No mixing, just a lazy snowstorm of cake dust.
Dot the top with the butter slices, spacing them as evenly as you can (don’t stress it—this ain’t rocket science).
Bake for 45–50 minutes or until the top turns a light golden brown and the cherry filling is bubbling around the edges.
Let it cool for 10–15 minutes. Then dig in like you mean it—preferably with vanilla ice cream.