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Butter Tart CakeTender layers of brown sugar cake baked right on top of buttery flaky pie crust and stacked high with the most delicious whipped rum buttercream frosting. Filled with iconic butter tart filling and topped with even more raisin butter tart yum, this cake is everything decadent and delicious! A true treat in every single forkful.
What Makes Up A Butter Tart CakeWith a warm, sweet, and rich flavor profile, this butter tart cake is made up of 3 different components:
- Brown Sugar Pie Crust Cake Layers – super soft and super tender these brown sugar cake layers are baked right on top of a buttery pie crust.
- Raisin Butter Tart Filling – ooey gooey and extra delicious this raisin butter tart filling is the star of the show. Not a raisin fan, no sweat! I’ve included substitution or omission swaps in the recipe.
- Rum Frosting – warm, fluffy, and so darn yummy. Whipped rum frosting is a crowd-pleaser and pairs beautifully with the sweet raisin butter tart filling.
Brown Sugar Pie Crust Cake LayersPrepare each cake pan with non-stick baking spray and a piece of parchment paper and roll/set out the store-bought pie crust. Place a cake pan on top of the pie pastry and with a sharp knife, cut around the base of the cake pan. Put each cut pie dough into the prepared cake pan, prick with fork tines, and bake according to the package instructions. It’s typically around 375ºF for 10-12 minutes. Once the crust has baked and is a beautiful light golden brown, remove it from the oven and, while still in the cake pans, place them directly on a cooling rack to cool. Begin to prepare the cake batter as the pie crusts cool. Once the cake batter is complete, divide and pour the batter evenly onto the cooling pie crusts, note that it’s okay if the crusts are still a bit warm, and bake again at 350ºF for approximately 30-35 minutes. Remove from the oven and allow to cool in the pans for 10 minutes on a cooling rack. After 10 minutes run a butter knife around the edges and invert on the cooling rack to fully cool.
Butter Tart Cake Ingredients
(Gluten-Free & Dairy-Free Ingredient Swaps)This recipe was originally written and made with regular ingredients. Since then, I have transitioned the blog into gluten-free and dairy-free by our lifestyle. The recipe card below will be shown with the original regular ingredients but I’ll include the gluten-free and/or dairy-free swaps here below that I’ve tested it with. Here are a few critical ingredients for this cake but make sure you scroll to the bottom recipe card for the complete ingredient list.
- Cake Flour: Cake flour is a lower protein flour than all-purpose and will create lighter fluffier cake layers. If you are gluten-free, use the same cup measurement in a gluten-free baking blend. If the mixture does not contain xanthan gum you will need to add ½ teaspoon of xanthan gum to the dry ingredients.
- Pie Crust: I used store-bought pie crust simply for ease of it. If you have a preferred pie crust recipe, you can use that. To make it gluten-free, use a gluten-free pie crust.
- Salted Butter: This recipe was tested with salted butter. Unsalted butter will work the same but you will need to add a pinch more salt. If you are dairy-free, replace the butter with a solid dairy-free baking substitute. Make sure it’s not a spread as that will not produce the same results. I highly recommend Becel plant-based baking bricks.
- Milk: You can use whatever type of milk you have in the fridge. The higher the fat content the richer the cake will taste. For dairy-free, swap with a dairy-free milk alternative like almond, coconut, or oat milk.
- Oil: Use canola or vegetable oil for best results.
- Raisins: Any type of raisin will work for this recipe so use whatever you prefer or have on hand. That said, I know raisins are quite controversial. If you are not a raisin fan you can simply omit or swap them with nuts like pecans or walnuts.
- Vanilla Extract: I will always encourage pure vanilla extract. It’s truly the best but with that said, artificial extract works as well in a pinch or on a budget.
- Rum Extract: This recipe calls for rum extract. It will give you the most flavor bang for your buck so to speak. Most grocery stores will carry it and you can also find it online here. You can use real rum if you would like though. I recommend a tablespoon of rum in the frosting.
How To Make Raisin Butter Tart FillingFirst things first, raisins are optional. While I’m a huge raisin butter tart fan, I know they are very controversial. If you would like to omit the raisins completely, go ahead. Simply follow the recipe and leave them out. Or, if you enjoy nuts like pecans or walnuts, you can swap those instead. Start by combining the raisins (see the note above), water, brown sugar, and cornstarch in a medium heavy-bottomed pot and begin to cook over medium heat. Continually stir until this mixture begins to thicken. You want the filling thick enough to coat the back of a spoon. This should take approximately 5-10 minutes. Remove it from the heat once the butter tart filling is thick enough and stir in the butter first and then the white vinegar. Pour the raisin butter tart filling into a shallow dish and cover the surface directly with plastic wrap. Allow it to fully cool before using it in the cake. You can put it in the fridge to cool faster if desired and can also be frozen.
Cake Assembly TipsStacking a cake with a soft filling like this butter tart cake can feel daunting. But, as they say, slow and steady wins the race. Let’s set you up for cake success with some tips and tricks.
Here are a few assembly tips:
- Fully Cooled Cake Layers: even if a tiny bit warm, layers will slip when warm. Ensure that each cake layer is fully cooled if not even a bit chilled. I will even work with semi-frozen cake layers if I have to bake them a few days before stacking.
- Leveled Cake Layers: flat and level cake layers will sit far easier than crooked ones. I use this super easy cake tool to ensure each cake layer is perfectly level.
- Create a Frosting Border: this piped frosting border between the cake layers acts as a dam to keep that delicious butter tart filling in.
- Keep the Cake Chilled: if at any point you begin to feel the cake slip or the frosting is too soft to work with, pop the cake and the frosting back into the fridge to chill. Remember, don’t rush it. Take your time.
How To Decorate A Butter Tart Cake“As you desire” is often how I refer to cake decoration. It’s not that I don’t want you to make the same cake as I did, it’s simply that I don’t want you to feel like you *have* to make the same cake. We all have an inner cake artist and I always want to encourage you to let it shine. That said, I break down this amazing butter cake decor for you real quick. Step 1: Crumb-coat the cake and allow it to chill for 20 minutes. See the above section for stacking tips and tricks. Step 2: Put a final “beauty” coat of frosting on the cake and smooth the sides and top edge with a cake smoother. Step 3: Place mini butter tarts around the top edge of the cake approximately 1 inch apart from each other. Pipe a Wilton 1M swirl between each tart. Step 4: Chill the cake until ready to serve.
Storing and Freezing InstructionsThis cake can be kept in an airtight container in the fridge for up to 7 days. It can also be stored in the freezer for up to 6 months. If you want to bake these layers a few days before, you most certainly can. Allow the cake layers to cool, wrap them in plastic wrap, and freeze until you a ready to stack and decorate the cake. When you are ready to stack and decorate the butter tart cake, thaw the frozen cake layers on a counter at room temperature for approximately an hour.
The Yummiest Butter Tart CakeA piece of classic Canadian deliciousness, this fantastic butter tart cake is a delicious combo of buttery, warm, rich, and sweet in every single bite. Tender moist brown sugar cake layers with ooey gooey raisin butter tart filling and covered in a smooth whipped rum buttercream frosting. This holiday butter tart cake is pure warm and cozy comfort in every scrumptious bite. Make sure you tag me on social media @cakedbykatie and leave me a rating and review below if you make it. Can’t wait to see it!
Canadian-Inspired Baking IdeasHere are a few other iconic Canadian treats:
- Nanaimo Bars
- Sprinkle Confetti Squares
- Nanaimo Bar Cake
- Strawberry Trifle by Baked by Blair
- Strawberry Shortcake Kabobs from Clean and Scentsible
- Salted Caramel Nanaimo Bars from Ai Made It For You