Jam Jam Cake. Inspired by one of Newfoundland’s most favourite cookie treats from the locally iconic, Purity Factories. It’s Newfoundland’s answer to the Victoria Sandwich Cake!

Jam Jam Cake
Spouse and I had lunch recently at The St. John’s Fish Exchange, as we carry on our quest for great fish and chips joints here in St. John’s.
I can report that their fish and chips was very good indeed. The view from our harbour-side table made the experience all the more pleasurable.
The dessert specials looked promising. We could’t help but be intrigued by one offering, a slice of Jam Jam Cake.
What a clever idea, I thought. The server offered nothing in the way of description, nor did I inquire, which probably was a mistake.
Jam Jam Cake, the expectation.
The cake I envisioned ( and hoped for ) was a sort of Newfoundland version of a Victoria Sandwich Cake. I expected a molasses cake to echo the two soft molasses cookies in a Purity Jam Jam.
I also thought the middle to be filled with Purity Partridgeberry Apple Jam.
Perhaps even, the cake would have a sprinkle of icing sugar as a tip of the hat to the Victoria Sandwich Cake.

Newfoundland Jam Jam Cake, ready for the oven
Not what what I expected.
That definitely wasn’t what I got.
The cake that was served was actually, at its heart, a pretty good dense vanilla pound cake. It was finished with buttercream frosting and garnished with a half a Jam Jam cookie.
Not at all what I was expecting.
Jam Jam Cake. Avoiding over the top sweetness.
What really put it over the top for me though, was that the layers of pound cake were soaked in straight-up Purity syrup.
This addition seemed like a strange choice to me. It took the dessert too over the edge, making it far too cloyingly sweet.
Purity syrup is as close to liquid candy as you can get, and really has nothing to do with Jam Jams. Shouldn’t there have been some jam in a Jam Jam Cake?
I determined that I would make my own vision of a Jam Jam Cake come to life!

Jam Jam Cake
Planning my Jam Jam Cake recipe.
First, I set out to make a soft and tender molasses cake. A cake which actually had enough molasses in it to be able to discern the flavour immediately upon tasting.
I mixed up the technique, ingredients & proportions a little for my White Velvet Cake to bring my Molasses Cake to life and it was a great success. The cake baked up absolutely beautifully. I was so pleased.
The jam
Initially, I thought about using my own Partridgeberry Apple Jam for this recipe, and undoubtedly will in the future (see recipe note).
But for the purposes of expedience and convenience, Spouse picked me up some of Purity’s own version at the store this morning. I was really anxious to taste this cake!
I quickly cooled and filled the cake and even sprinkled on a little icing sugar like I originally imagined it would look like. It was hard waiting to take the photos before I dived into the cake!

Newfoundland Jam Jam Cake, just out of the oven.
I was not disappointed! The molasses flavour came through, the cake was soft & moist and the partridgeberry apple jam complimented it all beautifully. Success!
If you liked this recipe you’ll also want to try our recipe for Jam Jam Cookies.
Like this Jam Jam Cake recipe?
You’ll find many more traditional and Newfoundland inspired recipes in our Newfoundland section and even more great desserts in our Cakes Pies & Tarts Category.
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Judy
Friday 20th of June 2025
I am anxious to make this cake, but what is fancy molasses?
Lori
Sunday 22nd of October 2017
Made this for a dinner party last night. It was really delicious, and tasted very much like a jam jam. We used the Purity Partridgeberry and Apple jam, and it worked wonderfully. I will be making this again, for sure!
Barry C. Parsons
Wednesday 25th of October 2017
I heard about the success from your Spouse, Lori. Always glad to be a small part of celebrations. Happy Birthday!
Marilyn
Thursday 12th of October 2017
I was wondering the above question as well.....I very seldom have cake flour....what can I substitute for the cake flour...
Sarah
Friday 27th of October 2017
Removing 2 tablespoons of flour and replacing with 2 tablespoons of cornstarch per cup of flour works well as a substitution for cake flour (so for the 1 1/2 cups required for this recipe you would replace 3 Tbsp of flour with 3 Tbsp cornstarch).
Barry C. Parsons
Wednesday 18th of October 2017
It may be labelled as pastry flour.
judy
Wednesday 11th of October 2017
was excited to see this recipe...until I saw the word "cake flour"... for those of us who don't have access to cake flour are there any options or suggestions???