Thankful Butterscotch Cake

A nine layer butterscotch cake with one slice being removed from it.

Most people think of leftovers as being confined to savory offerings, but this cake will last forever. It’s a very adult dessert, as it includes a quantity of rum that doesn’t get cooked out, and it’s so rich that very thin slices are the way to go. If you store it in the refrigerator and can restrain yourself, you can snack on it for up to two weeks. But beware, you might not be able to resist.–Bill Telepan and Andrew Friedman

LC Liar! Note:

Not to sully the reputation of chef Bill Telepan, but we’re thinking he’s a liar, promising that a cake as sleek and stunning as this butterscotch besmeared stack “will last forever.” Please. Not in our households.

He’s sneaky in another way, too. Rather than making us fussily slice standard cake layers into skinny, crumb-ridden layers to achieve this stacked effect, he ingeniously bakes just a little batter at a time, essentially creating multiple sturdy, ready-to-layer cakes that are a dream to slather with icing. Sort of more than makes up for that fib he told.

Butterscotch Cake

  • Quick Glance
  • (6)
  • 1 H, 30 M
  • 2 H
  • Serves 16 to 20
5/5 - 6 reviews
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Special Equipment: Candy thermometer

Ingredients

  • For the butterscotch icing
  • For the cake

Directions

Make the butterscotch icing

Combine the sugars, corn syrup, butter, cream, and salt in a large, heavy-bottomed saucepan to which you’ve attached a candy thermometer. Place it over medium-high heat. Cook, stirring continuously, until the butterscotch mixture comes to a boil. Have another pot of a similar size ready and on the side, off the heat. When the butterscotch mixture begins to boil, stir it frequently, taking care not to scrape the side of the pan. Cook at a full boil until the mixture reaches 242°F (120°C). This could take as long as 30 minutes. Be patient.

Immediately pour the butterscotch into the empty pot. (Do not scrape the sides or bottom of the saucepan with the spoon, as this could cause the icing to crystallize.) Immediately and carefully add the vanilla and rum to the icing, pouring from a good height above the pot. (If you pour from too close to the pot, the icing will steam and potentially burn you.) Stir to combine. Let the icing cool for 20 minutes, at which point it should be thick yet pourable.

Make the cake

Cut ten 8-inch circles of parchment or waxed paper. The baking will progress more quickly if you have at least three 8-inch cake pans. Preheat the oven to 350°F (175°C).

Combine the flour, baking soda, baking powder, salt, and nutmeg in a medium bowl and whisk lightly to combine. Using an electric mixer fitted with the paddle attachment, beat the butter and sugar until light and fluffy Add the eggs, 1 at a time, beating after each addition. Reduce the speed to low and add half of the flour mixture. Blend well. Add the vanilla, rum, and milk and mix just until the liquid is incorporated. Add the remaining flour mixture and beat until smooth, up to 4 minutes.

Work with 3 cake pans at a time, pour a heaping 1/2 cup of batter into each pan. Use a spatula to evenly spread the batter in the bottom of the pans. They will be very skinny cake layers. Bake for 15 to 18 minutes, or until the cakes spring back when lightly touched. Cool the layers in the pans slightly, then invert the cakes onto a wire rack to cool completely. Wipe the pans clean and continue to fill and bake with the remaining batter. You will need 9 layers for this cake.

When all the cakes have been baked, line the inside of a clean, dry cake pan with plastic wrap. (If the plastic wrap sticks out above the rim of the cake pan, fold it over the outside of the pan.) Peel the paper from the top of one cake layer and invert the layer so it’s upside down in the pan. (Or really, right side up, given that it was upside down on the wire rack.) Ladle about 1/4 cup of the warm butterscotch icing over the cake. (If the icing is no longer warm, rewarm it gently over low heat.) Top with another cake layer, paper removed. Continue ladling the filling evenly over each layer. The cake will grow higher than the cake pan as you fill; the cake pan is there just for a little foundational stability. Don’t worry if the edges of the cakes are a bit ragged; you’ll trim them before icing the sides of the cake. Just make sure the cake layers are evenly stacked, as it’s difficult to move a layer once it’s been placed on the icing. If at any point the butterscotch icing becomes too thick to pour easily, place it over low, low heat. Do not top the last cake layer with butterscotch. Refrigerate the cake until chilled completely through, at least 1 hour.

Place an 8-inch circle of parchment on top of the cake. Carefully invert the entire stack of layers onto a wire cooling rack. Remove the pan and the plastic wrap. Hold a long, sharp knife lengthwise alongside the cake and trim about 1/4 inch evenly all around, making sure you are not tilting the blade. The cake should be uniformly shaped, not wider at the bottom than the top.

Gently reheat the remaining butterscotch icing and pour it over the top and sides of the cake. Let stand until the coating is firm. Slide a metal spatula under the cake and transfer it a serving platter. This cake is best if made a day ahead, although it keeps beautifully for up to 5 days. Let it come to room temperature before slicing and serving.

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Recipe Testers' Reviews

Make no mistake, this butterscotch cake is an adult cake with plenty of rum and plenty of flavor. As the cake sits, the rum gets more absorbed, making this a moist, sweet cake. If you like the taste of dark rum and want a sweet dessert, this is for you.

The cake is time-consuming to make. It took me 2 hours to get everything mixed, baked, and iced, and then it needed to sit in the refrigerator for 1 hour before I could trim it and put the final glaze on it, which took another 10 minutes. I made the cake batter and started the baking before doing the icing as it saved some time. I used three 8-inch springform pans. Springforms are not necessary, but it made getting the thin layers out of the pan very easy. I baked each cake for 16 minutes, baking 3 at a time.

I had just enough icing to cover the top and sides of the cake. It took some coaxing to get this done, but I would not have wanted more icing on it.

When I looked at the picture and looked at each of my individual thin layers, I thought that my cake could not possibly look like the picture. By the time I stacked and iced each layer, let it sit in the refrigerator for an hour, then trimmed off 1/4 inch edge and put the final glaze on, it looked exactly like the picture! What a great transformation!

This is a stunning special occasion cake that wows with its towering tender cake layers, rich butterscotch, and a touch of earthy mellow rum. Slicing into all those wondrous layers is a showstopper and the first bite makes every kitchen moment oh so worth it. It’s definitely a cake to be thankful for.

I started off with a 3-litre pot when making the icing but decided when it reached boiling that it wasn’t going to be tall enough. I then used an 8-litre pot to ensure it didn’t boil over while reaching temperature. I then boiled it until the mixture reached 242°F, which took about 20 minutes.

I poured the mixture back into the original pot and added the rum and vanilla. It did steam up but not too much. The mixture was thick and pourable.

I only have two 8-inch cake pans so it took a bit longer to bake all the layers. My first layers were slightly thicker. My heaping cups were a bit too much at first. My final layer ended being much thinner.

Since the baking time was longer, I reheated the butterscotch on low heat to make it spreadable. I set up the cake plate and layers beside the stovetop so I could keep the butterscotch warm and workable. I found that 1/4 cup of butterscotch worked well to cover each layer thinly. With the butterscotch still a bit warm, I found I needed to use skewers to hold the layers in place while it cooled. I let the layers set for 1 hour before I did the final top and sides. I used a serrated knife to clean up the edges of the layers and then poured the butterscotch on top and let it pour down the sides. Then I used an offset spatula to evenly spread the butterscotch around the outside of the cake. I had more than enough butterscotch and had a puddle of extra at the bottom of the cake plate.

The instructions were good and I think the measurements right for the layers and for the icing. I think have the butterscotch warm helps to spread a thin layer. It was quite thick after it cooled while the cake layers were baking. Since I only had 2 pans I could have made the butterscotch while baking the layers but it only took 2 minutes to get the butterscotch warmed up.

I did find the cake and butterscotch quite sweet on baking day but when the cake was served the following day the flavors and sweetness seemed to have mellowed and the rum was a bit more forward. I served it with strong coffee but an espresso or black tea would be nice as well.

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Comments

  1. The cake looks perfect and fabulous to bake for a special day. Yes, its definitely the best butterscotch cake. Lovely!!

    1. Karen, we test all our recipes before sharing them on the site, and since we haven’t tried coconut cream, I’m hesitant to say yes or no. I love the way you’re thinking and I suspect since it’s coconut cream and not coconut milk you won’t experience any separating, but we just can’t say for certain. If you try it, kindly let us know how it goes…

  2. If you substitute cream for the rum as I have just now found, you are greatly increasing the oil to sugar ratio! EEks.

  3. I made this cake last night. All was going well until I went to “gently reheat” the remaining butterscotch icing for the top/sides and it completely separated! I was so upset since it took like 45 minute to make that damn butterscotch :( Any idea what i did wrong? I definitely had the heat on very low and constantly stirred it.

    I poured off all the butter that separated out and used it anyway. It’s not the smooth texture it should be but it still tasted good, so hopefully it will be fine to serve…

    1. Amy, I have made this cake several times and the same thing happened to me on the last go around. It was the night before Christmas Eve and I was extremely busy so I threw caution to the wind and continued to heat it until it came back together. It wasn’t ideal texture, but I still heard raves over it. The only thing I could think that I did differently this last time was using European style (Plugra butter).

    2. There are a few reasons why this may have separated. It may separate during the reheating process due to an abrupt temperature shift. Did you gently warm it? Also if the pan was thin, hotspots could cause the separation. It could also be due to a warm humid kitchen. Do any of these should like the culprit?

      1. Hi Beth, thanks for the reply! Hmm, it could def be due to a humid kitchen. Also I started out with a pot that wasn’t very thick so it could be that as well. Luckily I was able to salvage it enough to spread on the cake even if it wasn’t as pretty :)

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