Why did my leche flan and ube cake layers mix together?

Pour the ube batter slowly over the back of a spoon or spatula so it does not disturb the custard. Bake immediately in the prepared water bath.

Can I make this cake ahead of time?

Yes! It actually tastes better after chilling overnight. The flavors meld beautifully, and the texture becomes creamier.

What’s the best substitute for ube extract?

Ube extract supplies the recipe's characteristic aroma and colour. Ube halaya can add real purple-yam flavour, but it is not a direct liquid replacement, so the cake texture and sweetness will change.

How do I unmold the cake without cracks?

Cool the cake completely, chill it, loosen the sides with a thin knife, then briefly warm the base of the pan. Invert it onto a rimmed plate in one confident movement and wait a moment for the caramel to release.

How do I know when the cake is fully cooked?

The ube cake should spring back lightly and a skewer inserted into that layer should come out clean. The flan should look set with a slight wobble; it will firm further as the cake cools and chills.

Ube Leche Flan Cake Recipe (Easy Filipino Flan Cake)

Name: Ube Leche Flan Cake Recipe (Easy Filipino Flan Cake)
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Yield: 10
Cuisine: Filipino
Ingredients: 230 gram sugar (mixed with water and microwaved until golden); 60 ml water; 6 count egg yolks; 240 gram condensed milk; 200 gram milk (fresh milk); 1 teaspoon vanilla; 4 count egg yolks; 90 gram sugar; 60 ml oil; 60 ml milk; 2 teaspoon ube extract; 155 gram flour; 3 teaspoon baking powder; 0.5 teaspoon salt; 4 count egg whites; 80 gram sugar

Prep time

30 min

Cook time

1 hr

Total time

1 hr 30 min

Servings

10 servings1×

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Ube Leche Flan Cake

Ube Leche Flan Cake combines three layers in one pan: golden caramel, silky Filipino leche flan, and a soft ube chiffon-style cake. The cake and custard bake together, then the finished dessert is chilled and inverted so the flan appears on top. This combination is also sometimes called Ube Flan Cake or Ube Custard Cake, but the defining feature is the ube cake-and-leche-flan pairing.

Why This Recipe Works

The separated eggs give the ube cake its chiffon-style lift: the yolks enrich the batter while the whipped whites hold air. Folding the meringue gently keeps that air in the batter. The flan is denser than the cake, so it settles beneath the batter as both layers cook and set.

The water bath moderates the heat around the custard, helping it cook evenly without becoming rubbery. Gentle mixing and straining reduce bubbles. Cooling and chilling are equally important because the flan and caramel need time to firm before the cake is turned out.

Layer Sequence

Cook the sugar and water until golden, then pour the caramel into the 8-inch pan.
Mix the egg-yolk custard gently, strain it, and pour it directly over the caramel.
Make the ube cake batter and fold in the meringue in three additions.
Pour the batter slowly over the custard, using the back of a spoon or spatula to soften the pour. Do not stir the layers together.
Set the filled 8-inch pan inside the larger pan, add hot water for the water bath, and bake at 170°C (340°F) for 60 minutes.

Ube And Cake Texture

This is a chiffon-style ube cake because it uses a separated-egg batter and meringue rather than a creamed-butter method. The ube extract provides the main ube aroma and colour in this formula; it does not replace real purple yam or ube halaya. If you add ube halaya as a variation, expect a heavier, sweeter crumb and do not treat it as a like-for-like extract substitution.

Troubleshooting The Layers

The layers mixed together: The cake batter was poured too quickly or the custard was disturbed. Pour slowly over a spoon or spatula and bake immediately.

The flan is runny: It may be underbaked or still warm. Check the cake layer with a skewer, look for a gentle wobble in the custard, and chill the cake fully before judging the final set.

The ube cake is dense: The whites may have been overbeaten, underbeaten, or folded too firmly. Whip to stiff peaks that still look glossy, then fold in three additions without deflating the mixture.

The flan has bubbles: Aggressive whisking introduces air. Mix only until combined, strain the custard, tap the filled pan gently, and avoid excessive water-bath heat.

The caramel stayed in the pan: The cake may not have been chilled enough. Loosen the edges, warm the base briefly, and invert onto a rimmed plate so any released caramel is caught.

The cake cracked during inversion: It was likely warm, stuck at the edges, or turned out unevenly. Chill it, run a thin knife around the pan, warm the base briefly, and invert in one confident movement.

Unmoulding And Storage

Cool the cake completely, cover it, and refrigerate for at least several hours, ideally overnight. To unmould, loosen the sides, place a rimmed serving plate upside down over the pan, then turn both over together. Wait briefly before lifting the pan so the caramel can release.

Keep the cake covered and refrigerated, and serve within 3 days. It is suitable for making the day before, but freezing is not recommended because the custard can become watery and the cake texture may suffer after thawing.

For related Filipino desserts, see Leche Flan, Ube Mamon, Yema Cake, and Ube Crinkles. These pages cover the component desserts separately; this recipe is specifically the combined cake-and-flan format.