Boston Cream Pie Cake
My Decadent Boston cream pie cake is made with a soft vanilla sponge cake, silky smooth vanilla pastry cream and topped with my delicious, one-bowl glossy chocolate sauce! This classic American cake is such a treat, so easy to make and a perfect example of the simple things in life, being so good!
Nick’s favorite thingโฆ
Itโs always the simple things in life that are the most enjoyable. And this cake is no exception. This cake is easy to make, delicious and so classic. And just an FYI, I would classify this dessert as something youโd find at a country fair. Those are my favourite types of desserts! No fuss, not fancy, just really delicious!
What does Boston cream pie cake taste like?
The sponge is soft and light and really easy to make. The custard filling is a creamy, easy to make classic pastry cream speckled with thousands of vanilla beans. And to top it off, a glossy and perfectly silky chocolate ganache.
What are the ingredients I need for Boston cream pie cake?
Milk – I used cos milk, but almond milk will also work.
Unsalted butter – salted would work well too.
Caster sugar – also known as superfine sugar.
All-purpose flour – also known as plain flour.
Eggs – youโll need egg yolks for the custard and whole eggs for the cake. I used large eggs. If youโre looking for ways to use up the left over meringues, check out my Passionfruit Pavlova here, my Fairy bread Pavlova here, and my Strawberry Pavlova here! !
Vanilla bean paste – you can use vanilla extract in its place. Always use good quality vanilla extract when baking, it makes a huge difference. I have a great recipe here for it if youโd like to try your own!
Heavy cream – this is the type of cream you use for whipping.
Baking powder – this is used to help the cake rise.
Salt – I used fine salt.
Dark chocolate – I used nestle dark chocolate melts.
Glucose syrup – also known as corn syrup.
Letโs go through each step.
Custard Filling
- Add the milk and 1/4 cup – 60g butter to a heatproof jug or bowl and microwave for 30 seconds or until butter is melted. Set aside to cool for 10 minutes.
- To a large mixing bowl, add the sugar, flour and salt. Use a whisk to combine.
- Next, add the egg yolks and whisk together until smooth.
- Add 1/4 of the warmed milk and whisk to temper the egg mixture. Whisk together before adding the rest of the milk. Mix until well incorporated.
- Transfer to a medium sized saucepan and use a spoon or spatula to stir on medium heat until it thickens.
- Take off the heat and add half of the remaining butter and vanilla bean paste. Stir until the butter is melted and well combined. Then add the remaining butter and repeat.
- Transfer the mixture to a medium sized bowl and cover with plastic wrap. Chill in the fridge for 2 hours.
- Once chilled, unwrap and use a spatula to smoothen out. Set aside in the fridge until ready to use.
Cake
- Preheat a fan forced oven to 160C / 325F. Spray two 8-inch cake tins with oil spray and line the bottom with baking paper.
- Add the milk and butter to a large heatproof jug or mixing bowl and microwave for 30 seconds or until butter is melted. Allow to cool. Add the eggs and sugar to a large mixing bowl. Use an electric beater to whip until it doubles in size and becomes pale and creamy, about 5 minutes.
- Slowly add the warmed milk while the mixer is on medium speed until itโs all in there.
- To a medium bowl, add the all-purpose flour, baking powder (video incorrectly shows corn starch) and salt. Use a whisk to combine.
- Add to the egg and milk mixture along with vanilla extract and mix until well combined.
- Split the batter between two cake tins. Bake for 20 – 25 minutes. Allow to cool.
Chocolate Ganache
- Add the chocolate cream and glucose syrup to a heatproof jug or bowl and microwave for 30 seconds at a time, stirring each time.
- Until smooth.
Letโs decorate!
- Take the cakes out of the cake tins and place the first layer on your serving plate.
- Add the chilled custard filling and spread around using a spatula.
- Add the next layer of cake and gently press down.
- Finish by pouring the chocolate ganache on top.
My Top Tips!
- When pouring the ganache, make sure the ganache is not too warm or thin or it will drizzle off the cake and look messy. You want it just thin enough that it will gently and slightly fall off the sides. Refer to the video to see what I mean.
- Make the custard first to give it enough time to chill and set.
- Make the ganache about 30 minutes before pouring to allow it to come to the right consistency.
- When adding the custard, use a spatula to spread around and flatten out as much as you can. Alternatively, you can use a spoon.
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Other Classic Recipes You Might Like!
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Boston Cream Pie Cake
Serves 8
Ingredients
Custard Filling
- 500 ml / 490 g milk, warmed
- 125 g unsalted butter, cold and cubed
- 105 g caster sugar
- 40 g all-purpose flour, video incorrectly says corn starch
- 6 large egg yolks
- 1 tsp vanilla bean paste, or extract
Cake
- 3 / 159 g large eggs
- 315 g caster sugar
- 175 ml / 180 g milk
- 125 g unsalted butter
- 225 g all-purpose flour
- 1 1/2 tsp baking powder, video incorrectly says corn starch
- 1 tsp salt
- 1 tsp vanilla extract
Chocolate Ganache
- 115 g dark chocolate
- 125 ml / 122 g heavy cream
- 2 tbsp / 20 g glucose syrup , (or corn syrup)
Learn How To Make it! [VIDEO]
Instructions
Custard Filling
- Add the milk and 60g butter to a heatproof jug or bowl and microwave for 30 seconds or until butter is melted. Set aside to cool for 10 minutes.
- To a large mixing bowl, add the sugar, flour and salt. Use a whisk to combine. Next, add the egg yolks and whisk together until smooth.
- Add 1/4 of the warmed milk and whisk to temper the egg mixture. Whisk together before adding the rest of the milk. Mix until well incorporated.
- Transfer to a medium sized saucepan and use a spoon or spatula to stir on medium heat until it thickens. Take off the heat and add half of the remaining butter and vanilla bean paste. Stir until the butter is melted and well combined. Then add the remaining butter and repeat.
- Transfer the mixture to a medium sized bowl and cover with plastic wrap. Chill in the fridge for 2 hours. Once chilled, unwrap and use a spatula to smoothen out. Set aside in the fridge until ready to use.
Cake
- Preheat a fan forced oven to 160C / 325F (180C / 355F for no fan). Spray two 8-inch cake tins with oil spray and line the bottom with baking paper.
- Add the milk and butter to a large heatproof jug or mixing bowl and microwave for 30 seconds or until butter is melted. Allow to cool.
- Add the eggs and sugar to a large mixing bowl. Use an electric beater to whip until it doubles in size and becomes pale and creamy, about 5 minutes.
- Slowly add the warmed milk while the mixer is on medium speed until itโs all in there.
- To a medium bowl, add the all-purpose flour, baking powder (video incorrectly shows corn starch) and salt. Use a whisk to combine.
- Add to the egg and milk mixture along with vanilla extract and mix until well combined. Split the batter between two cake tins. Bake for 20 – 25 minutes. Allow to cool.
Chocolate Ganache
- Add the chocolate cream and glucose syrup to a heatproof jug or bowl and microwave for 30 seconds at a time, stirring each time until smooth.
Letโs Decorate!
- Take the cakes out of the cake tins and place the first layer on your serving plate. Add the chilled custard filling and spread around using a spatula. Add the next layer of cake and gently press down. Finish by pouring the chocolate ganache on top.
Notes
Nutrition
50
14 comments
Hi Nick, Thanks for this video. Looks so delicious. Question: Can I use custard powder instead of eggs for the custard recipe? Do you think it will come out the same way? Thanks in advance for your response. keep safe!
Hi Sharls! Thanks so much for watching! I haven’t tried that, but think it would turn it into a much thicker custard. I’d say give it a go. If it comes out too thick you can always thin it out with a dash of warm milk. N x
I canโt wait to try this!!!!! It brings me so much lovely memories of when I first tried Boston cream doughnuts from one of the franchises that opened up in my home country! I even worked with them for 4 years! I live in Malta ๐ฒ๐น so 20 years ago it was something I had never tried!!! Unfortunately we donโt have this franchise anymore and no one really makes similar authentic doughnuts like I remember!!
Thats amazing Sharleen! They sound so yum! Got to try Boston cream donuts! N x
Custard tasted awful! There was so much raw flour taste! No matter how long I was cooking and stir it again and again. I baked it with twice more milk and it did help a bit. I suggest using 20 g. cornstarch instead. And yep, I haven’t checked the rest of the recipe after this mess ๐
I’ve made this recipe loads of times and I haven’t had that problem. And the custard is not baked. It’s cooked on the stove. I’ve also had lot’s of people tell me they enjoyed the recipe. I stand by this recipe 100% for those reasons and I would encourage anyone reading this to follow the recipe.
I LOVE YOUR RECIPES!!! Do you think this could be made into a two tiered cake and hold up as a wedding cake?
Hi Nivia! Hmm, it’s a sponge cake so you would need to make sure you have a properly support structure built for it. But I don’t see why not! And thanks for the kind words! N x
So recipe is great, I juts change a bit of cream technique, cooked and chilled custard, then remaining butter whipped and added and one spoon at the time od custard still whipping, consistency is heaven.
Everyone loved it ๐
Thanks David! N x
WOW! first attempt at a Scran line recipe after many years following on FB. What a recipe to start with. The custard was absolutely amazing, cooked it slowly on the hob and had no flour taste at all. I did splash out and buy the vanilla paste instead of just essence and it really made a difference. I also used whole milk (UK) so not sure if this made a difference. Will defo be trying more recipes, in love with this one!
Thanks so much Em! So glad you loved it! N x
Be careful with the metric converted recipe. First time we made it we used the cup measurements and cake worked perfectly. Second time we used the weights and the cake flopped horribly. Remade it and checked the flour weight bs cups and it was missing half a cup of flour. Should be 250g of flour not 190g. Worked perfectly third try.
Tastes great bit this is one recipe that you should use cup measurements for.
Hi Amy, thanks so much for your comment. I’ve gone in and converted this recipe and updated it with the correct measurements. Thanks for being pateient as I go through the site and update ingredients to gram measurements! N x