Banana Pudding Cake Recipe (Poke Cake Style)
A tender vanilla sheet cake poked while warm, soaked with homemade banana custard, and topped with fresh whipped cream and crushed vanilla wafers. Southern dessert magic in a 9x13 pan.
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The whole thing rests on one detail most versions get wrong, which is the holes themselves. Size, depth and timing all matter, and all three are covered below before the recipe.
Why You'll Love This Recipe
- It feeds fifteen from one pan and travels in the pan it was baked in.
- The custard is cooked from scratch with real mashed banana, so the banana flavour runs through the cake rather than sitting in slices on top.
- It genuinely tastes better on day two, which is rare for cake and explained in the Chef's Note.
- No layers, no frosting technique, no decorating. The messy look is the intended look.
Poke with the round handle of a wooden spoon, not a fork, and stop two thirds of the way down.
Fork tines make narrow slits that the crumb closes over within seconds, which is why so many poke cakes end up with a custard layer sitting on top.
A spoon handle leaves a wide, open channel about a centimetre across that stays open. Space the holes roughly an inch apart in a grid, and resist going all the way to the pan base: holes punched to the bottom drain the custard straight through and pool it under the cake, which is exactly how you get a soggy bottom and a dry middle.
Two thirds down, an inch apart, cake still warm. That is the entire trick.
Read Before You Start
Make the cake first, the custard second. This is a timing recipe more than a technique recipe. The cake needs to be warm when you poke it and the custard needs to be warm when you pour it, so the custard should hit the stove while the cake is in the oven. Custard that has already set will sit on the surface like frosting and never reach the holes.
Thin the custard deliberately. The filling here uses a quarter cup of cornstarch to two and a half cups of milk, which is noticeably looser than a pudding you would eat with a spoon. That is on purpose. A firm pudding cannot flow into a hole. If you use a stiffer recipe you will get a pudding-topped cake rather than a banana pudding cake.
Ingredient Deep Dive & Notes
Whole milk: One cup in the cake, two and a half in the custard. The custard is mostly milk by weight, so this is not a place to economise. Lower fat milk sets the same but tastes thin against the banana.
Cornstarch: A quarter cup. Less than you would use for a pie filling, for the reason given above. Cornstarch rather than flour because it thickens clear and pours smoothly.
Egg yolks: Four large. They carry the richness that separates homemade custard from something out of a packet, and the colour they give reads as banana even before you taste it.
Very ripe bananas: One cup mashed, about two medium, cooked into the custard. Heavily spotted fruit is right here. One thing worth knowing: ripe bananas contain enzymes that break starch down, so raw mashed banana stirred into a finished cornstarch pudding can thin it out overnight. Heating the banana with the milk deals with that, which is why the method below cooks it in rather than folding it through at the end.
Vanilla wafers: About 25 cookies, crushed, for the top. Check the label if halal status matters to you, since wafer brands vary. Crush them coarsely, with some pieces left the size of a pea, so there is still texture against the whipped cream.
Heavy cream: One and a half cups, cold. Real whipped cream, not tub-style topping, which usually contains gelatin and would take the halal-friendly tag off this recipe.
Vanilla extract: Alcohol-free, used across both the cake and the custard for consistency with the other banana recipes on this site.
Baking powder: Two and a half teaspoons. There is no acid in this batter, unlike a banana cake, so baking powder does all the lifting on its own and baking soda would be wrong here.
Do not substitute the sliced bananas onto the cake in advance: Sliced banana on a cake surface browns within hours and no amount of covering helps once the cake goes into the fridge for four hours. The mashed banana in the custard delivers the flavour. Slices are a garnish added at the table.
For the original spoonable version in a bowl, see our Classic Banana Pudding. For the diner-style pastry crust version, see our Banana Cream Pie Recipe.
Equipment Needed
- Light-coloured metal 9x13 pan. This cake is served and stored in the pan, so use one you do not mind putting on a table.
- A wooden spoon with a round handle. The actual tool for the job, per the tip above.
- Heavy-bottomed 3-quart saucepan. Milk custard scorches in thin pans before the centre thickens.
- Medium mesh sieve. The banana pulp needs to come out, and a very fine sieve clogs.
- Hand or stand mixer for the cream.
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Ingredients for banana pudding poke cake: flour, sugar, eggs, butter, milk, cornstarch, mashed banana, vanilla wafers, heavy cream, and vanilla
Detailed Step-by-Step Cooking Guide
1. Mix and bake the vanilla cake
2. Cook the banana custard while the cake bakes
3. Cool the cake 15 minutes, then poke it
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Poking holes in warm vanilla sheet cake with a round wooden handle
4. Pour the warm custard over
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Pouring warm banana custard from a saucepan over the poked cake so it flows into the channels
5. Press and chill 4 hours
6. Top just before serving
Getting the Texture Right
Troubleshooting common poke cake soaking and custard setting issues:
Either the holes were made with a fork and closed up, the cake had cooled too far, or the custard had already set. Warm cake, warm custard, wide holes.
The holes went all the way through to the pan. Custard drains straight down and pools. Stop two thirds of the way down.
It did not reach a proper rolling boil. Cornstarch needs to boil to reach full strength, and egg yolks contain an enzyme that breaks starch down unless heat destroys it.
The cake was overbaked before soaking. A dry crumb absorbs liquid unevenly and turns pasty. Pull the cake at the first skewer with moist crumbs.
It was spread hours ahead. Whip and top just before serving, or beat 2 tablespoons of mascarpone in with the sugar for stability.
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Cross-section of banana pudding poke cake showing clean custard channels, pudding layer, and whipped cream
How to Use This Method
How to Serve, Store & Reheat
Cut into 15 squares straight from the pan, wiping the knife between cuts. Serve cold. Add banana slices to individual squares at the table rather than to the whole pan, so nobody gets a brown one.
Cover and refrigerate up to 3 days. It is at its best on day two. By day three the wafer crumbs have softened completely, which some people prefer and some do not.
No. The custard splits with heat and the whipped cream collapses.
Not once assembled. The custard weeps on thawing. The plain vanilla cake alone freezes well for up to 3 months, wrapped in plastic then foil, so bake it ahead and do the soaking on the day.
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Plated squares of banana pudding cake topped with whipped cream, wafer crumbs and fresh banana slices
Dietary Variations & Adaptations
Beat 8 ounces of softened block cream cheese with the powdered sugar before folding in the whipped cream. This gives a thicker, tangier topping that holds for two days instead of a few hours. It does mean checking the cream cheese label for enzyme source if halal status matters to you.
A cup-for-cup gluten-free blend works in the cake, and gluten-free vanilla wafers on top. Let the batter rest 15 minutes before baking so the starches hydrate.
Plant-based block butter in the cake, full-fat canned coconut milk in the custard, and coconut whipped cream on top. Coconut comes through clearly, so treat it as a related dessert rather than a copy.
Cake goes stale because of starch retrogradation, not because it dries out. The starch granules that swelled and softened in the oven slowly recrystallise as the cake sits, and the crumb firms up even inside a sealed container.
That is why a cake wrapped tightly on the counter still tastes old by day three. Sugar and moisture both slow this process down by getting between the starch molecules and interfering with the recrystallising, which is the actual reason a poke cake behaves so differently from a plain one.
You have pumped a sweet, wet custard directly into the middle of the crumb, so the interference is happening throughout the cake rather than just at the surface.
A banana pudding cake on day two is not just a cake that has survived. It is a cake that is measurably softer than it was the night before.
Allergen Notice: This recipe contains milk, eggs and wheat. Vanilla wafers may also contain soy. Substitutions: a gluten-free flour blend and gluten-free wafers for the wheat, plant-based butter and coconut milk for the dairy. The egg yolks are structural in the custard and cannot be removed. Brand formulations vary and change over time, so read labels yourself when baking for someone with an allergy.
Frequently Asked Questions
Recipe Visual Gallery (6 Full Photos)
Recipe Card & Steps
Ingredients Checklist
Click an item to check it off as you prep
- 2 1/2 cups (313g)all-purpose flour
- 2 1/2 tspbaking powder
- 1/2 tspfine salt (for cake)
- 3/4 cup (170g)unsalted butter, softened
- 1 1/2 cups (300g)granulated sugar (for cake)
- 4 largeeggs, room temperature
- 1 tbspalcohol-free vanilla extract (for cake)
- 1 cup (240ml)whole milk, room temperature (for cake)
- 2/3 cup (135g)granulated sugar (for custard)
- 1/4 cup (32g)cornstarch
- 1/4 tspfine salt (for custard)
- 4 largeegg yolks
- 2 1/2 cups (600ml)whole milk, divided (for custard)
- 1 cup (230g)mashed very ripe banana (about 2 medium bananas)
- 2 tbsp (28g)unsalted butter (for custard)
- 2 tspalcohol-free vanilla extract (for custard)
- 1 1/2 cups (360ml)cold heavy cream
- 3 tbsppowdered sugar
- 25 cookiesvanilla wafers, coarsely crushed
- 2bananas, sliced, to serve
Step-by-Step Instructions
Follow along and mark each step complete as you cook
Preheat oven and prepare cake batter
Heat the oven to 350°F (175°C) and grease a 9x13 pan. Whisk the flour, baking powder and salt together in a bowl. Beat the softened butter and granulated sugar on medium-high for 3 minutes until pale. Add the eggs one at a time, beating after each, then the vanilla.
Bake vanilla cake
Add the flour mixture in three additions and the milk in two, starting and ending with flour, mixing on low just until each disappears. Spread into the pan and bake 28 to 32 minutes, until the centre springs back and a skewer comes out with a few moist crumbs.
Mix cornstarch slurry for custard
While the cake bakes, whisk the sugar, cornstarch and salt in a bowl, then whisk in the egg yolks and 1/2 cup of the cold milk until smooth.
Cook banana custard
Heat the remaining 2 cups milk with the mashed banana in a heavy saucepan until steaming with small bubbles at the edge. Ladle it into the yolk mixture in a thin stream while whisking, then return everything to the pan. Cook over medium heat, whisking constantly, until the mixture thickens and slow bubbles break the surface. Cook 1 minute from that point.
Strain and finish custard
Off the heat, stir in the butter and vanilla, then push through a medium mesh sieve to catch banana fibers. Keep warm.
Cool cake 15 minutes and poke holes
Let the baked cake stand in its pan 15 minutes. Using the round handle of a wooden spoon, poke holes in a grid about 1 inch apart, going two thirds of the way down, twisting slightly as you pull out.
Pour warm custard and chill 4 hours
Pour the warm custard slowly over the cake, aiming at the holes and working it in with an offset spatula. Leave the excess as a layer on top. Press plastic wrap directly onto the surface and refrigerate at least 4 hours or overnight.
Top with whipped cream and wafers
Before serving, whip the cold cream with the powdered sugar to soft peaks, spread over the cake and scatter the crushed wafers on top. Add banana slices to individual squares at the table.
Recipe Card Notes & Tips
- Use a wooden spoon handle, not a fork. Fork slits close over and the custard stays on the surface.
- Do not poke to the bottom of the pan or the custard drains through and pools.
- The custard must be poured warm. Once set, it will not enter the holes.
- Do not put banana slices on the whole cake ahead of time. They brown within hours in the fridge.
- The plain cake can be baked and frozen up to 3 months ahead. Soak on the day.
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