Keto Cake Boats

This cake was baked in a top-split, New England style hot dog bun baking pan! (Although you could use a 13” x 9” baking pan and cut into buns.) I made two flavors of Whipped Mascarpone Cream and laid out an array of toppings and my family had a blast making custom Cake Boats at a recent party. Whether you prefill these cakes or allow your guests to create their own, this dessert will be a BIG HIT with everyone! (I bought the hot dog bun baking pan on the King Arthur’s Baking Company website.)

Keto Cake Boats

Makes 10 bun-size cakes or 20 smaller cakes

Keto Cake Mix (I recommend King Arthur’s Keto Yellow or Chocolate Cake Mix)*

Ingredients called for on the box (eggs, milk, oil, etc)

Whipped Mascarpone Cream 

Makes about 3 cups of frosting

1 1/4 cups heavy whipping cream, cold

½ cup low carb powdered sweetener (I used LaKanto Monkfruit Confectioners sweetener)

1 teaspoon vanilla extract

8 ounces plain mascarpone cheese (not sweetened), softened but still chilled

Whipped Chocolate Mascarpone Cream

Makes 3 cups

1 1/4 cups heavy whipping cream, cold

½ cup low carb powdered sweetener (I used LaKanto Monkfruit Confectioners sweetener)

1/4 cup unsweetened cocoa powder

1 teaspoon vanilla extract

8 ounces plain mascarpone cheese (not sweetened), softened but still chilled

Garnishes: berries or other low carb fruit, sugar free sprinkles, chopped nuts, my sugar free Keto Chocolate Fudge Sauce (click here to see recipe)

1. Make the cake according to the package directions and bake in the New England style hot dog bun pan or a 13” x 9” pan that has been sprayed with nonstick cooking spray. *NOTE: The King Arthur’s Cake Mix I used wasn’t enough to fill the hot dog pan or a 13” x 9” baking pan. I used two cake mixes and made a double batch of batter, which was more than I needed, so I made cupcakes out of the excess batter and froze them for another time. Fill whichever baking pan you use to about ½” below the rim and then bake according to directions or until a toothpick inserted in the center comes out clean. After 10 minutes, remove cake to a wire rack to cool completely.

2. Make the Whipped Mascarpone Cream: Add the heavy whipping cream, powdered sweetener and vanilla extract to a large mixer bowl and whip on high speed until soft peaks form. If making the chocolate version, also add the cocoa powder.

3. Add the mascarpone cheese to the whipped cream and whip until stiff peaks form. It will happen fairly quickly. (I prefer to use the mascarpone cheese when still chilled, but softened a bit, so that it will incorporate well without chunks. The warmer the mascarpone cheese is, the more likely it is to soften to the point that it won’t firm up well again, and can make too soft of a frosting. I suggest taking it out of the refrigerator about 15 minutes before using so that it softens a bit, but is still cool.)

4. Cut the cooled cake into buns and cut a V-shape along the top of each bun. Fill with mascarpone cream and garnish with berries or other toppings. Drizzle with sugar free chocolate sauce and serve.

Nutritional Information will vary, depending on the fruit and other toppings used. One full-size cake boat made from King Arthur’s Keto Yellow Cake Mix according to package directions is 168 calories, 15.6 g carbs (12 g dietary fiber, 2 g sugars), 14.4 g total fat (2.4 g saturated fat, 0 g trans fat), 92 mg cholesterol, 272 mg sodium, 10 mg calcium, 139.2 mg potassium, 1 mg iron, 4.8 g protein. Net carbs per cake (without toppings): 3.6 grams

Recipe and photos by Kathy Sheehan, copyright 2024

All rights reserved. Please do not duplicate without the author’s permission.