If you have a sweet tooth and a love for unique desserts, you are going to adore this Chocolate Chocoflan (Mexican Impossible Cake) Recipe. This heavenly creation combines a rich, moist chocolate cake layer with a silky, creamy flan, all topped with luscious caramel sauce. The magic is that during baking, the layers magically switch places, creating a stunning, indulgent dessert that is as fascinating to make as it is to eat. Whether you’re making it for a family gathering or a special occasion, this recipe guarantees smiles and second helpings.

Ingredients You’ll Need
This Chocolate Chocoflan (Mexican Impossible Cake) Recipe uses simple, everyday ingredients that come together beautifully. Each one plays an important role in creating the perfect balance of flavors and textures, resulting in that classic “impossible” layered effect.
- Caramel sauce: A sweet and slightly burnt syrup that forms the golden base and top for the cake’s signature shine and flavor.
- Chocolate cake mix: Convenient and reliable, this mix forms the fluffy, rich chocolate foundation; don’t forget to include the eggs, oil, and water as per package instructions.
- Sweetened condensed milk: Adds creamy sweetness and helps create the smooth flan custard.
- Evaporated milk: Provides a lighter dairy richness without adding too much sweetness, balancing the flan perfectly.
- Eggs: Essential for both the cake structure and the custard’s silky texture.
- Vanilla extract: Brings warmth and depth, subtly enhancing both the chocolate and flan layers.
How to Make Chocolate Chocoflan (Mexican Impossible Cake) Recipe
Step 1: Prepare Your Pan and Caramel
Start by preheating your oven to 375°F (190°C) and greasing a 12-cup bundt pan thoroughly. Pour the caramel sauce evenly into the bottom of the pan. This caramel will soften and bubble during baking, then create a gorgeous shiny glaze when the cake is inverted, so don’t skimp on this essential layer.
Step 2: Mix and Pour the Chocolate Cake Batter
Prepare the chocolate cake batter exactly as directed on the box with eggs, oil, and water. Then pour that batter slowly and evenly over the caramel in the bundt pan. The dense batter will settle below the lighter flan mixture you’ll add next, setting the stage for the “impossible” layer switch to happen.
Step 3: Blend the Flan Mixture
In a blender, combine the sweetened condensed milk, evaporated milk, eggs, and vanilla extract. Blend until you have an ultra-smooth custard base. This step ensures that the flan layer will be silky and consistent without lumps.
Step 4: Pour the Flan Over the Cake Batter
Carefully pour the flan custard over the chocolate cake batter in the pan. At first, it might look like the layers will mix, but don’t worry — the baking process works its magic and the layers will separate flawlessly, giving you that striking dual-layer effect that makes this Chocolate Chocoflan (Mexican Impossible Cake) Recipe so famous.
Step 5: Create a Water Bath and Bake
Cover the bundt pan tightly with aluminum foil to prevent steam from leaking in. Then place it inside a larger baking dish and pour hot water around the pan until it comes about an inch up the side. This water bath helps bake the flan layer gently and evenly, ensuring a perfect creamy texture without cracking.
Step 6: Bake Until Perfect
Bake for 50 to 60 minutes, checking by inserting a toothpick into the cake portion — it should come out clean when the cake is done. The flan will have set beautifully by this time, creating two distinct but complementary layers in your Chocolate Chocoflan (Mexican Impossible Cake) Recipe.
Step 7: Cool and Chill
Once baked, carefully remove the bundt pan from the water bath and let it cool completely at room temperature. Then refrigerate for at least 4 hours or ideally overnight. This step is crucial because chilling solidifies the flan, making the cake easier to unmold and enhancing the texture.
Step 8: Unmold and Serve
When ready to serve, run a knife gently around the edges to loosen the cake. Invert it onto a large plate and watch the glossy caramel cascade over the chocolate and flan layers. For an extra touch, drizzle with additional caramel sauce if you like it a little sweeter or more dramatic in presentation.
How to Serve Chocolate Chocoflan (Mexican Impossible Cake) Recipe

Garnishes
While this recipe’s natural caramel shine is stunning, consider adding a dollop of whipped cream or a sprinkle of toasted coconut flakes for some texture contrast. Fresh berries or mint leaves can also add a lovely pop of color and freshness to each slice.
Side Dishes
This Chocolate Chocoflan (Mexican Impossible Cake) Recipe shines as a standalone dessert, but for a complete celebration spread, serve it alongside sweet Mexican hot chocolate or a scoop of vanilla ice cream. The warmth of the drink or creaminess of ice cream can beautifully complement the cake’s rich flavors.
Creative Ways to Present
For an eye-catching presentation, plate individual slices with a drizzle of caramel and a dusting of cocoa powder. You can also make mini versions in ramekins to create personal flan and cake parfaits, perfect for sharing at parties or potlucks.
Make Ahead and Storage
Storing Leftovers
Because of its custard layer, this cake keeps best refrigerated in an airtight container to maintain moisture and freshness. Leftovers should stay delicious for up to four days, making it a perfect make-ahead treat.
Freezing
If you want to freeze this Chocolate Chocoflan (Mexican Impossible Cake) Recipe, slice it into portions first and wrap individually in plastic wrap followed by foil. This prevents freezer burn and allows you to thaw out single servings at a time. Frozen pieces will keep well for up to two months.
Reheating
To enjoy leftovers, it’s best to eat them chilled or at room temperature so the flan layer remains creamy and smooth—reheating can cause separation or changes in texture. If you prefer a slight warmth, try a quick zap in the microwave for 10-15 seconds but avoid overheating.
FAQs
What makes this cake “impossible”?
The term “impossible” refers to how the chocolate cake and flan layers magically switch during baking despite being poured in the opposite order. The density difference causes this delightful transformation, creating a beautifully layered dessert.
Can I make the flan layer without a blender?
Yes! You can whisk the sweetened condensed milk, evaporated milk, eggs, and vanilla by hand, but blending helps ensure the custard is perfectly smooth, which yields a better texture in the final flan.
Do I have to use a bundt pan for this recipe?
A bundt pan works best for even cooking and the classic ring shape that highlights the two layers, but a deep tube pan or angel food cake pan can also work if you don’t have a bundt pan handy.
Is it okay to use store-bought caramel sauce?
Absolutely! Store-bought caramel sauce saves time and tastes fantastic. If you want a richer, homemade touch, you can easily make your own caramel sauce with sugar and butter, but both options are delicious.
How long should I refrigerate before serving?
For optimal texture, refrigerate the cake at least 4 hours to let the flan set properly. Overnight refrigeration is even better and makes slicing much cleaner and easier.
Final Thoughts
There is something truly magical about the Chocolate Chocoflan (Mexican Impossible Cake) Recipe that captivates everyone who tastes it. The intriguing layering, luscious caramel, and blend of chocolate and creamy flan make it an unforgettable dessert to share with friends and family. I hope this recipe inspires you to bring a little delicious wonder into your kitchen soon!
