Rat Cake Chocolate Ganache

Featured in: Sunrise Spoonfuls

This chocolate creation features a moist base enriched with cocoa and brewed coffee for depth. The light, whipped chocolate ganache adds a fluffy texture complementing the rich cake beneath. Carefully crafted marzipan or modeling chocolate rats add a whimsical, edible decoration that makes the dessert unique. Baking involves a careful blend of dry ingredients and wet, including eggs, milk, oil, and vanilla, creating a balanced batter baked to perfection. The ganache is chilled and whipped to achieve airy smoothness before topping the cooled cake. The final step involves shaping the playful rats and arranging them in a fun, chaotic pattern on top.

Optional adjustments add personal touches like a spicy chili hint in the ganache or a nut-free version by swapping marzipan for modeling chocolate. Serving suggestions include fresh berries or raspberry coulis to introduce acidity and freshness to the dessert.

Updated on Wed, 12 Nov 2025 13:04:00 GMT
A slice of this Rat Cake with Whipped Chocolate Ganache shows its moist layers and rat decor. Save It
A slice of this Rat Cake with Whipped Chocolate Ganache shows its moist layers and rat decor. | sunnyspoonful.com

A whimsically dark and decadent chocolate cake inspired by avant-garde patisserie, featuring a rich, moist base and airy whipped chocolate ganache with playful rat decorations crafted from marzipan or modeling chocolate. Perfect for those who crave a unique dessert experience blended with a touch of artistry.

I first encountered this style of cake at a modern patisserie exhibit and was immediately captivated. Recreating it at home, I found the rat-shaped decorations added fun and conversation, making this a favorite at both gatherings and quirky celebrations.

Ingredients

  • Cake Base: 1 1/2 cups (190 g) all-purpose flour, 1 1/2 tsp baking powder, 1/2 tsp baking soda, 1/2 tsp fine sea salt, 3/4 cup (65 g) unsweetened cocoa powder, 1 1/4 cups (250 g) granulated sugar, 2 large eggs, room temperature, 3/4 cup (180 ml) whole milk, 1/2 cup (120 ml) vegetable oil, 2 tsp pure vanilla extract, 3/4 cup (180 ml) hot brewed coffee
  • Whipped Chocolate Ganache: 8 oz (225 g) semi-sweet chocolate, chopped, 1 cup (240 ml) heavy cream, pinch of salt
  • Rat Decorations: 5 oz (140 g) marzipan or modeling chocolate, black, pink, and gray food coloring gel (optional for details), edible silver dust or shimmer (optional)

Instructions

Prepare Cake Pan:
Preheat oven to 350°F (175°C). Grease and line a 9-inch (23 cm) round cake pan with parchment paper.
Mix Dry Ingredients:
In a large bowl, sift flour, baking powder, baking soda, salt, and cocoa powder.
Add Sugar:
Mix granulated sugar into the dry ingredients until well combined.
Combine Wet Ingredients:
In a separate bowl, whisk eggs, milk, oil, and vanilla until smooth. Pour wet ingredients into dry mixture and mix until smooth.
Blend Coffee:
Gradually add hot brewed coffee, mixing until batter is glossy and well-blended.
Bake:
Pour batter into prepared pan and bake for 35 to 40 minutes or until a toothpick comes out clean. Cool completely on a wire rack.
Make Ganache:
Place chopped chocolate in a heatproof bowl. Heat cream with pinch of salt until just boiling, then pour over chocolate. Let sit 2 minutes. Stir until smooth.
Whip Ganache:
Refrigerate ganache 45 minutes, then whip with mixer until light and fluffy.
Frost Cake:
Spread whipped ganache generously over the cooled cake.
Shape Rats:
Knead marzipan or modeling chocolate with food coloring and sculpt small rats, tails, ears. Add details using toothpick or edible paints. Dust with edible silver for a modern touch.
Decorate:
Arrange rat decorations on cake in whimsical, chaotic pattern.
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This cake became a birthday highlight for our family, sparking laughter as everyone chose their favorite rat to eat first. Kids especially love helping shape the little whimsical rat figures, turning baking into a creative weekend project.

Required Tools

9-inch (23 cm) round cake pan, mixing bowls, electric mixer or whisk, sifter, rubber spatula, parchment paper, small sculpting tools or toothpicks for decorations

Allergen Information

Contains eggs, milk/dairy, wheat/gluten, and almonds if using marzipan. For nut allergies, use modeling chocolate and check all chocolate ingredients carefully.

Nutritional Information

Per serving: 410 calories, 22 g fat, 52 g carbohydrates, 5 g protein.

Imagine the rich, dark Rat Cake, frosted with light ganache and playful marzipan rats. Save It
Imagine the rich, dark Rat Cake, frosted with light ganache and playful marzipan rats. | sunnyspoonful.com

Serve your Rat Cake with fresh berries or a drizzle of raspberry coulis for a chef-worthy finish. Every slice holds a delightful surprise, making your dessert table unforgettable.

Recipe FAQs

What gives the cake its rich chocolate flavor?

The cake base combines unsweetened cocoa powder with brewed coffee, which intensifies and deepens the chocolate notes.

How is the whipped ganache made fluffy?

The ganache is chilled until firm, then whipped with a mixer until it becomes light and airy, creating a delicate texture.

Can marzipan decorations be replaced?

Yes, modeling chocolate can be used instead of marzipan, especially to accommodate nut allergies or achieve different textures.

Does the cake require special tools for decorations?

Small sculpting tools or toothpicks help shape and add fine details to the rat figures crafted from marzipan or modeling chocolate.

How long does the entire process take?

Preparation takes about 40 minutes, baking another 40, plus time for chilling and whipping the ganache before assembling decorations.

Are there ways to add flavor variations?

Incorporating a pinch of chili powder into the ganache adds a subtle, spicy kick that complements the chocolate’s richness.

Rat Cake Chocolate Ganache

Moist chocolate cake topped with light whipped ganache and whimsical marzipan decorations for a fun touch.

Prep Time
40 mins
Cook Time
40 mins
Total Duration
80 mins
Authored by Lana Bright

Recipe Type Sunrise Spoonfuls

Skill Level Medium

Cuisine Style Modern European

Recipe Yield 10 Serving Size

Diet Preferences Vegetarian-Friendly

What You'll Need

Cake Base

01 1 1/2 cups all-purpose flour (190 g)
02 1 1/2 teaspoons baking powder
03 1/2 teaspoon baking soda
04 1/2 teaspoon fine sea salt
05 3/4 cup unsweetened cocoa powder (65 g)
06 1 1/4 cups granulated sugar (250 g)
07 2 large eggs, room temperature
08 3/4 cup whole milk (180 ml)
09 1/2 cup vegetable oil (120 ml)
10 2 teaspoons pure vanilla extract
11 3/4 cup hot brewed coffee (180 ml)

Whipped Chocolate Ganache

01 8 ounces semi-sweet chocolate, chopped (225 g)
02 1 cup heavy cream (240 ml)
03 Pinch of salt

Rat Decorations

01 5 ounces marzipan or modeling chocolate (140 g)
02 Black, pink, and gray food coloring gel (optional)
03 Edible silver dust or shimmer (optional)

Directions

Step 01

Prepare the Oven and Pan: Preheat the oven to 350°F (175°C). Grease and line a 9-inch round cake pan with parchment paper.

Step 02

Combine Dry Ingredients: Sift together the flour, baking powder, baking soda, salt, and cocoa powder in a large bowl.

Step 03

Add Sugar: Incorporate the granulated sugar into the dry ingredients and mix thoroughly.

Step 04

Mix Wet Ingredients: In a separate bowl, whisk the eggs, milk, vegetable oil, and vanilla until fully combined. Pour this mixture into the dry ingredients and stir until smooth.

Step 05

Incorporate Coffee: Gradually add the hot brewed coffee into the batter, mixing until the batter becomes glossy and homogeneous.

Step 06

Bake the Cake: Pour the batter into the prepared pan and bake for 35 to 40 minutes, or until a toothpick inserted in the center emerges clean. Allow the cake to cool completely on a wire rack.

Step 07

Prepare Ganache Base: Place chopped chocolate in a heatproof bowl. Heat heavy cream with a pinch of salt until it just begins to boil, then pour over the chocolate. Let stand for two minutes before stirring until smooth.

Step 08

Chill and Whip Ganache: Refrigerate the ganache for 45 minutes, then whip it with a hand mixer until light and fluffy.

Step 09

Apply Ganache: Generously spread the whipped ganache over the cooled cake, ensuring full coverage.

Step 10

Craft Rat Decorations: Knead marzipan or modeling chocolate with optional food coloring to shape small rat figures, tails, and ears. Add fine details using toothpicks or edible paints. Optionally dust with edible silver shimmer.

Step 11

Arrange Decorations: Place the rat figurines atop the ganache-coated cake in a whimsical, scattered pattern for visual interest.

Tools You'll Need

  • 9-inch round cake pan
  • Mixing bowls
  • Electric mixer or whisk
  • Sifter
  • Rubber spatula
  • Parchment paper
  • Small sculpting tools or toothpicks

Allergy Information

Review each ingredient to identify potential allergens, and consult a healthcare professional if you're unsure.
  • Contains eggs, dairy, wheat gluten, and almonds if marzipan is used; chocolate may contain soy. Substitute marzipan with modeling chocolate for nut allergies.

Nutrition Details (Per Serving)

This nutritional data is for reference only and isn't a substitute for medical advice.
  • Caloric Value: 410
  • Fats: 22 grams
  • Carbohydrates: 52 grams
  • Proteins: 5 grams