Are you big into cakes? My grandson really likes baking chocolate cakes.
Chocolate cake can be made with other ingredients, as well.
What kind of other ingredients would you suggest? I've been getting a bit tired of his usual recipe to be honest.
Flourless chocolate cake
A flourless chocolate cake is a dense "fallen" cake made from an aerated chocolate custard. 
Whole eggs are whipped to a foam in a manner similar to a Génoise cake, using low heat from the melted chocolate to stabilize the protein matrix. The resulting batter contains only the starch naturally present in the chocolate, and is baked in a bain-marie.
Flourless chocolate cake is a popular dessert in gluten-free diets.
A similar cake with little or no flour in which the
cakes. Some restaurants use an artistic drizzling of chocolate syrup to decorate servings of cheesecake or cake, along with other decorations such as cocoa powder, powdered sugar or chocolate shavings. Some brands of chocolate syrup are marketed as chocolate milk syrup (e.g., Nesquik). Other brands are marketed as ice cream sundae toppings.
Ingredients.
A simple chocolate syrup can be made from unsweetened cocoa powder, a sweetener such as sugar, and water. Recipes may also include other ingredients, such as corn syrup, malt,