If you are looking for a dessert that will make your guests stop and say “How did you do that?”, you’ve found it. The XXL Mole Cake is a whimsical, giant-sized version of a European classic. It combines a moist cocoa sponge with a thick layer of whipped pastry cream and a hidden heart of fresh bananas.
The magic happens when you “dig” into the cake. The top looks like fresh, dark soil (actually crumbled cake!), but underneath lies a bright, creamy, and fruity center. It’s the ultimate “dirt cake” for grown ups and kids alike.
Why You’ll Fall in Love with this Mole Cake
Hidden Textures: You get the light crunch of the crumbles, the silkiness of the cream, and the soft sweetness of the bananas in one bite.
Visually Stunning: It looks like a professional bakery creation but is made with simple pantry staples.
Perfect for Prep: This cake actually tastes better after chilling, making it the ideal “make-ahead” dessert for busy hosts.
XXL Size: This recipe is designed to feed a crowd, perfect for birthdays or potlucks.
Quick Stats
- Prep Time: 30 Minutes
- Cook Time: 30 Minutes
- Chilling Time: 1 Hour (Minimum)
- Total Time: 2 Hours
- Servings: 12–15 generous slices
The Shopping List
To get that perfect “mole hill” look, grab these essentials from your local grocery store:
For the Chocolate Sponge Base:
4 Large Eggs: Room temperature for the best volume.
1 Cup Granulated Sugar: To sweeten the cocoa base.
1 Cup Whole Milk: Provides moisture to the sponge.
1/2 Cup Vegetable Oil: Keeps the cake soft even after chilling.
2 Teaspoons Vanilla Extract: (Equivalent to 1 packet of vanilla sugar).
2.5 Teaspoons Baking Powder: (Equivalent to 1 packet).
2 Tablespoons Unsweetened Cocoa Powder: Use a high-quality dark cocoa for that “soil” look.
2 Cups All-Purpose Flour: Sifted to ensure no lumps.
For the “Cloud” Cream Layer:
2 Envelopes Whipped Cream Mix: (Like Dream Whip) or 2 cups of heavy whipping cream.
1 Packet Instant Vanilla Pastry Cream Mix: (Or instant vanilla pudding mix in a pinch).
3 Cups Cold Whole Milk: To whip into the cream mixture.
For the Filling:
3 Large Ripe Bananas: Look for bananas that are firm but sweet.
The Recipe Maker Method
1. Whip the Batter
In a large mixing bowl, combine your eggs and sugar. Using a hand mixer, beat them until they are pale and fluffy. Slowly pour in the milk and oil while continuing to mix. Sift in the flour, cocoa powder, baking powder, and vanilla. Mix on low speed until just combined be careful not to over-mix, or the sponge will be tough!
2. The Bake
Preheat your oven to 340°F (170°C). Grease a 9×13 inch glass baking dish or a deep cake pan. Pour the chocolate batter in and bake using the top and bottom heat setting for 30 minutes.
3. The “Hollow Out” Phase
This is the most important step! Once the cake has cooled completely, take a fork and gently scrape off the top layer of the cake. You want to create a shallow “trench” or “well” in the cake. Note: Leave about a half-inch of cake at the bottom and sides to act as the bowl. Set the scraped-off cake pieces aside in a bowl.
4. The Banana Layer
Peel and slice your bananas into uniform rounds. Lay the slices side by side in the hollowed out section of your cake until the entire bottom is covered in fruit.
5. Whip the Cream
In a separate cold bowl, combine the whipped cream mix, pastry cream mix, and 3 cups of cold milk. Beat with a hand mixer until very stiff peaks form. You want this cream to be sturdy enough to hold its shape! Spread the cream evenly over the bananas, smoothing the top with a spatula.
6. The “Mole Hill” Finish
Take the cake pieces you scraped off earlier and pulse them in a food processor until they look like fine crumbs (or crumble them finely by hand). Sprinkle these crumbs generously over the top of the cream until no white is visible. It should look like a freshly dug mole hill!
7. The Big Chill
Place the cake in the refrigerator for at least 1 hour. This allows the cream to set and the flavors to meld. Slice into squares and serve cold.
Pro Tips for the Perfect Mole Cake
The Fork Technique: When scraping the cake, don’t be too aggressive. Use light, horizontal strokes with the fork to keep the crumbs fluffy rather than gummy.
Stabilized Cream: If you are using fresh heavy cream instead of a mix, consider adding a “whippet” or a teaspoon of gelatin to ensure the XXL layer of cream doesn’t collapse when you slice it.
Lemon Juice Hack: If you aren’t serving the cake immediately, toss your banana slices in a little lemon juice before placing them in the cake to prevent them from browning.
The XXL Mole Cake: A Chocolatey, Creamy Hidden-Banana Surprise
Ingredients
- For the Chocolate Sponge:
- Eggs: 4 large
- Sugar: 1 cup granulated
- Milk: 1 cup whole
- Oil: ½ cup vegetable or canola oil
- Vanilla: 2 tsp vanilla extract or 1 packet vanilla sugar
- Baking Powder: 2 ½ tsp or 1 packet
- Cocoa Powder: 2 tbsp unsweetened
- Flour: 2 cups all-purpose
- For the Filling & Cream:
- Bananas: 3 large ripe
- Whipped Cream Mix: 2 envelopes e.g., Dream Whip
- Pastry Cream Mix: 1 packet instant or vanilla pudding mix
- Milk: 3 cups cold for the cream
Instructions
- Prepare Batter: In a bowl, whisk eggs and sugar until fluffy. Add milk, oil, vanilla, baking powder, cocoa powder, and flour. Mix with a hand mixer until smooth.
- Bake Sponge: Pour the batter into a greased baking dish. Bake in a preheated oven at 170°C (340°F) for 30 minutes. Remove and let cool completely.
- Hollow Out: Using a fork, gently scrape off the top layer of the cake to create a shallow “trench.” Leave the bottom and sides intact. Set the removed cake pieces aside.
- Add Fruit: Slice the bananas and arrange them in an even layer inside the hollowed-out section of the cake.
- Whip Cream: Combine the whipped cream mix, pastry cream mix, and 3 cups of cold milk in a bowl. Beat until very stiff peaks form.
- Assemble: Spread the cream mixture evenly over the bananas, creating a slight dome shape.
- Create “Soil”: Place the reserved cake pieces in a food processor and pulse into fine crumbs. Sprinkle the crumbs over the cream until it is completely covered.
- Chill & Serve: Refrigerate for at least 1 hour to set. Slice into squares and enjoy chilled.
While bananas are the classic choice, strawberries or raspberries work beautifully! Just make sure the fruit is patted dry so the juice doesn’t make the cream runny.
This often happens if the oven door is opened too early. Since we are scraping the top off anyway, don’t worry too much about a slight sink! It actually makes the “hollowing out” process easier.
Because of the fresh bananas and dairy, this cake is best eaten within 2 days. Keep it covered in the fridge to prevent the cake crumbs from drying out.
You can! Just follow the box instructions for a 9×13 pan, then follow our “Hollow Out” and “Cream” steps to turn it into a Mole Cake.
If your cream isn’t holding its peak, you can fold in a little bit of pre thickened instant pudding or simply chill the cream for 30 minutes before spreading it on the cake.
