Ingredients :

• The bananas — They must be very ripe, with brown spots on the skin. Not perfect yellow supermarket bananas—those will stay firm and bland after baking. Ripe bananas provide a natural sugar and aroma that nothing else can replace here.
• Canned strawberry filling — A ready-to-use strawberry pie filling, thick and sweet with pieces of candied strawberries. If you can’t find it, a thick strawberry jam can work in a pinch—reduce the quantity slightly, as it’s sweeter than filling.
• Yellow cake mix — A box of yellow cake mix, Betty Crocker brand or equivalent. Pour it in dry, without preparing it as indicated on the box. Here, the melted butter and the moisture from the fruit replace the liquid—that’s the whole principle of a dump cake.
• Melted butter — About 170 g. It should be melted but not boiling—warm, not hot. Pour it in a thin stream over the entire surface of the cake mix so the crust is even. If you pour it all in one mass in the center, you’ll have a soggy core and dry edges.