In a saucepan, combine the vanilla pudding powder, sugar, and a small amount of the milk. Whisk until smooth and free of lumps.
Add the remaining milk and place the saucepan over medium heat. Cook while stirring constantly until the mixture thickens into a smooth pudding.
Remove from the heat, stir in the vanilla extract, and set aside to cool slightly.
2. Prepare the Cake Batter
Preheat your oven to 180°C (350°F).
In a large mixing bowl, beat the eggs, sugar, and vanilla extract until the mixture becomes lighter and slightly fluffy.
Add the vegetable oil and milk and mix until combined.
In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add the dry ingredients to the wet mixture, stirring just until a smooth batter forms.
Avoid overmixing, as this can make the finished cake less tender.
3. Assemble the Cake
Line a rectangular baking pan with parchment paper and lightly grease the sides.
Pour the cake batter into the prepared pan and spread it evenly.
Spoon the prepared vanilla custard over the batter in an even layer. Depending on the consistency of the custard, you can gently spread it with a spatula.
4. Bake
Place the pan in the preheated oven and bake for approximately 30–40 minutes, or until the cake is golden on top and a toothpick inserted into the cake portion comes out clean.
The exact baking time can vary depending on the size and depth of your pan.
5. Cool and Serve
Allow the cake to cool in the pan before cutting it into squares.
Finish generously with powdered sugar just before serving.
For especially clean slices, let the cake cool completely before cutting.
Tips for a Perfect Cake
Don’t overmix the batter. Mix only until the ingredients are incorporated to keep the cake soft.
Use room-temperature ingredients. Eggs and milk at room temperature generally combine more smoothly.
Watch the custard consistency. It should be thick enough to sit on the batter rather than becoming completely liquid.
Let it cool before slicing. The creamy layer becomes more stable as the cake cools.
Dust with powdered sugar at the end. Adding it just before serving keeps the finish fresh and attractive.
Serving Suggestions
These cake squares are delicious on their own, but they can also be served with:
Fresh berries
Sliced strawberries
Whipped cream
A cup of coffee
Black tea
A light vanilla or berry sauce
For a more elegant presentation, arrange the squares on a white serving platter and dust them lightly with powdered sugar immediately before serving.
Storage
Store leftover cake in an airtight container in the refrigerator because of the creamy custard layer.
It is best enjoyed within 2–3 days. Allow refrigerated pieces to sit at room temperature for a few minutes before serving for a softer texture.
Frequently Asked Questions
Can I make this cake ahead of time?
Yes. In fact, allowing the cake to cool completely before serving makes it easier to cut and gives the creamy layer time to set.
Can I use homemade vanilla custard?
Absolutely. Homemade custard can be used instead of instant pudding and gives the cake an especially rich vanilla flavor.
Why did my cake become dry?
Overbaking is one of the most common reasons. Start checking the cake toward the end of the suggested baking time, since ovens and baking pans can vary.
Can I freeze the cake?
Because of the creamy custard layer, freezing may slightly change the texture. For the best result, keep it refrigerated and enjoy it fresh.
A Simple Cake Worth Making Again
Soft, golden, creamy, and finished with a delicate layer of powdered sugar, these Vanilla Custard Cake Squares are proof that a beautiful homemade dessert doesn’t need to be complicated.
Whether you’re preparing something for guests, a weekend family dessert, or simply want a comforting treat with your afternoon coffee, this easy cake is a recipe worth keeping in your collection.
