It’s time for my Bake-Off Challenge – the Week One Showstopper: Landscape Cake. This landscape cake is a warm carrot cake paired with a walnut white chocolate ganache.
This time around, I am doing the week one showstopper from my Great British Bake Off expedition. The challenge for the showstopper is a landscape cake. I will admit, I had a very hard time trying to decide what the decoration would be. Part of me was still uncertain even as I started baking.
I decided to go with a carrot cake since it’s been quite some time since I had made one. This felt perfect to pair with a walnut and white chocolate ganache. I really wanted to capture those warm spices while also bringing a sweet note to match.

For the design of the cake, I wanted to do something on top that made sense with the cake below. The result was making an island on the ocean. I thought that having the cake act as the ocean while building an island on top would be the main decoration. Although some of my initial island plans didn’t quite work out, it still turned out well. I also like the contrast of a summery outside with flavors that are more associated with fall or winter.
Check out the Make section of MCG for a variety of fun recipes, including delightful desserts and savory dishes that will tantalize your taste buds.

It’s hard to talk about ingredients since there are three different recipes contributing to making the landscape cake. One big difference between cake batter and cookie batter is the fat. This cake uses vegetable oil as fat, while cookies use something more solid like butter. I also noticed there is an increase in eggs to make the cake more batter than dough.
The more “fun” ingredients in this recipe are the handful of spices and walnuts. I love adding spices into cakes, and sometimes I feel I get a little too liberal. Finesse is something I really must try for, and placing powders into a small spoon while it comes out of a perforated cap. So sometimes, I just kind of eyeball it.
Process
Carrot Cake

The base of this landscape cake is the cake itself. I decided to pick a carrot cake because I wanted to make one, and this seemed like a good excuse to accomplish that. I started with two bowls, one for the dry ingredients and one for the wet ingredients. The bowl for the wet ingredients was the one compatible with the mixer.
I put the flour and spices into the non-mixer bowl, while the wet ingredients had a bit more of a process. To start, I added the vegetable oil, brown sugar, and white sugar into the bowl and beat them together until it became a cohesive mixture. Then I added the eggs one at a time. I wanted to make sure the egg had been completely incorporated before adding the next one. The vanilla was also added with the last egg.


After the wet mixture is thoroughly mixed together, I added the dry ingredients into the wet ingredients. This process was done by adding ¼ cup of the flour mixture at a time. Adding in parts allows for a better incorporation of the ingredients.
The cake batter is ready! I divided the cake batter between the 3 9-inch pans (to the best of my ability). I could have weighed it out to make sure the batter was evenly spread, but I didn’t think of doing that in the moment.

Cream Cheese Frosting

The next part to make for the landscape cake was the cream cheese frosting. I started with the butter, beating it until it was light and fluffy. Then I added in the powdered sugar one cup at a time. I tried to hand-mix in some of the powdered sugar before using the mixer because it tends to go everywhere when the mixer is involved.
Next, I added vanilla extract and cinnamon to the frosting for some flavor. But cream cheese frosting needs cream cheese. I added the cream cheese roughly one tablespoon at a time. At this point, I tasted the frosting to make sure I liked it.


Homemade frosting always tastes too much like butter for my liking. It’s why I normally switch to vegetable shortening instead of butter. I didn’t do the swap out for this recipe because I thought the cream cheese would be enough to overtake the butter flavor. It didn’t. To help the flavor, I kept adding cinnamon until I got the flavor to my liking.
I put some of the frosting to the side to be dyed and used for decoration. Mainly to make green frosting that would be the greenery of the island.
Walnut White Chocolate Ganache
The last component for the landscape cake is the walnut white chocolate ganache. It is important to use candy melts because they will regain their structure to make the ganache. I started by slightly melting the candy melts. The chocolate shouldn’t be fully melted, just slightly softened.


While this is happening, I also put the heavy whipping cream in a small pot on the stove. I wanted to bring the cream to something slightly above a simmer but not a rolling boil. I wanted to use the ganache to coat the outside of the cake as well as one of the inside layers. The walnuts would make the outside of the cake lumpy, so I thought I should split the chocolate to make two ganaches without the walnuts as well.
I then poured the hot heavy whipping cream evenly between the two bowls of chocolate. The heat from the cream will help the chocolate melt. I let the cream and chocolate sit for about 5 minutes with a cover on top to help retain the heat. Then I mixed the chocolate into the cream to get a consistent texture.


This is where the two bowls become different: one got the crushed walnuts, and the other got blue food dye. The mixtures were still too hot to work with, so I let them cool before putting all the components together to make the landscape cake.
Assembly
The last step is to assemble the landscape cake. I first started with the cake layers. The bottom is a layer of cake. Then a layer of cream cheese frosting. Next is a layer of cake followed by a layer of the walnut white chocolate ganache. The last cake layer covers the ganache with a layer of frosting on top.


I used the frosting to fill the cracks on the cake as well as use it for a crumb layer. This will help make the cake smoother, which gives a better finish. The blue white chocolate ganache was used to coat the outside of the cake on all sides.
To make the island, I started by using some of the extra walnut crumble that I had to make the outer edge of the island. I thought that it looked like sand, so it was perfect for the edge. There was some extra cake crumble from the earlier construction, so I decided to use it to make the island have a bit more height. It looked more dynamic to me.


Then I used the green dyed frosting to create a texture on the top of the cake. I really need to explore the piping tips I have because I am never sure which is the right one for which project. I also wanted to make a palm tree out of fondant, but that turned out to be a small disaster because I couldn’t properly judge proportions.
Reflections
Overall, I think I am mostly happy with the final result of the landscape cake. I added a little too much of the shredded carrot, but I don’t like seeing those things go to waste. But adding less would have been good for the cake texture. I am looking to experiment to see if I can make the cake rise a bit more, but that’s for another day.

This cake did make me realize I need to work more with fondant. Or look into using modeling chocolate and figure out which is better for what project. I have a sneaking suspicion that modeling chocolate would have been better for making my palm trees on this landscape cake.
Lessons
What Method to Use for Measuring
US recipes use cups, or some subset of cups, to measure out the ingredients. I am not the most consistent with measuring out my ingredients when using the cups. Scooping up flour and pouring it into a bowl is one swift movement for me (well, I might level off the powder depending on the recipe). Instead of using cups, there are places that go by weight. The biggest advantage of this is the consistency it brings. The weight of the ingredients won’t change between bakes.
Recipe

Carrot Cake with Spiced Cream Cheese Frosting and Walnut White Chocolate Ganache
Ingredients
Carrot Cake
- 3 Cups All-Purpose Flour
- 3 Teaspoon Baking Powder
- ½ Teaspoon Baking Soda
- 1 Teaspoon Salt
- 2 Teaspoon Ground Cinnamon
- 1 Teaspoon Ground Nutmeg
- ¾ Teaspoon Ground Ginger
- ½ Teaspoon Ground Clove
- 1 ¾ Cup Vegetable Oil
- 1 ½ Cup Dark Brown Sugar
- 1 ½ Cup Granulated Sugar
- 6 Large Eggs
- 2 Teaspoon Vanilla Extract
- 4 ½ Cups Shredded Carrots approximately 6 large carrots
Cream Cheese Frosting
- 1 Cup Unsalted Butter room temperature
- 1 Cup Cream Cheese
- 4 Cup Powdered Sugar
- 1 Teaspoon Vanilla Extract
- 3 Teaspoon Ground Cinnamon to taste
Walnut White Chocolate Ganache
- 2 10-oz Bags White Chocolate Melts
- 1 Cup Heavy Whipping Cream
- ½ Cup Walnuts minced
Instructions
Carrot Cake
- Preheat oven to 350 degrees Fahrenheit. Grease 3 9-inch pans.
- In a medium bowl, combine flour, baking powder, baking soda, salt, cinnamon, nutmeg, ginger, and clove. Set aside.
- In a large mixer bowl, combine vegetable oil, sugar, and dark brown sugar. Beat mixture until well combined. Scrape down the sides.
- One at a time, add eggs and then vanilla extract.
- Add in the flour mixture approximately ¼ cup at a time. Mix until well combined before adding the next scoop. Fold in carrots by hand.
- Spread batter evenly over the prepared pans and bake for 55 minutes. A toothpick should come out clean from the center to indicate the cake is fully cooked.
- Place cakes on wire racks to cool for 10 minutes before turning out completely cool.
Cream Cheese Frosting
- In a large mixer bowl, beat the butter until pale and creamy.
- On a low speed, add powdered sugar 1 cup at a time until well blended. Scrape down the sides as needed. Add the cinnamon before increasing mixer speed and beat for another 3 – 5 minutes to fluff up the mixture.
- Slowly add the cream cheese 1 tablespoon at a time. Beat well until the mix is blended.
Walnut White Chocolate Ganache
- In a pot, bring the heavy whipping cream to a simmer.
- In a large, microwave-safe bowl, microwave the chocolate for one minute to soften the chocolate.
- Pour the hot cream over the softened chocolate. Cover and let sit for 5 minutes
- Add crumbled walnuts and whisk gently so combine. Let cool to stiffen before use. If the ganache becomes too firm, microwave for 10 seconds to soften until desired consistency is reached.
Aseembly
- Build the cake in the following order: cake layer, frosting layer, cake layer, walnut white chocolate ganache layer, cake layer.
- Coat the outside of the cake with the cream cheese frosting.
- Optional. Use the remaining walnut white chocolate ganache to cover the cake exterior.





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