Start by getting everything ready. Turn your oven on to 350°F (175°C) so it can preheat while you work. Lightly grease a 9×13-inch baking pan and set it aside.
Next, make the cake batter. In a large mixing bowl, add the cake mix, cherry pie filling, eggs, almond extract, and canola oil. Mix everything together until the batter looks smooth and evenly combined, with no dry spots left.
Pour the batter into the prepared pan, spreading it out evenly. Place the pan in the preheated oven and bake for about 35 minutes. The cake is done when a toothpick inserted into the center comes out clean.
Once baked, remove the pan from the oven and let the cake cool completely in the pan. This step is important so the frosting doesn’t melt when you spread it on.
While the cake is cooling, prepare the frosting. In a medium bowl, whisk together the melted butter and milk. Slowly add the powdered sugar and cocoa powder, mixing until the frosting becomes smooth and creamy. Finish by stirring in the almond extract and vanilla bean paste.
When the cake has fully cooled, spread the frosting evenly over the top. Allow the frosting to set, then cut the cake into slices and serve.