Green Tea Cake With White Chocolate Buttercream (Dairy)

Green Tea Cake with White Chocolate Buttercream Frosting
Green Tea Cake with White Chocolate Buttercream Frosting

The Spruce / Miri Rotkovitz

Prep: 35 mins
Cook: 25 mins
Total: 60 mins
Servings: 10 to 12 servings
Nutrition Facts (per serving)
474 Calories
25g Fat
59g Carbs
4g Protein
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Nutrition Facts
Servings: 10 to 12
Amount per serving
Calories 474
% Daily Value*
Total Fat 25g 32%
Saturated Fat 14g 71%
Cholesterol 129mg 43%
Sodium 268mg 12%
Total Carbohydrate 59g 22%
Dietary Fiber 1g 2%
Protein 4g
Calcium 101mg 8%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

Matcha is a green tea powder traditionally used in the Japanese tea ceremony. Because it is finely ground, it integrates beautifully into baked goods, to which it adds sweet, herbaceous notes and a spring green color. The creamy, mellow sweetness of white chocolate buttercream complements the matcha in this lovely layer cake.


  • For the Cake:
  • 2 cups/250 grams all-purpose flour
  • 1 cup/200 grams sugar
  • 2 tablespoons​ matcha green tea powder
  • 1 1/4 teaspoons baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup/242 grams sour cream (or plain yogurt)
  • 3 large eggs
  • 2/3 cup oil ( grapeseed or canola)
  • 2 teaspoons vanilla extract
  • For the Frosting:
  • 1 cup/2 sticks/227 grams unsalted butter (cut into small pieces and softened to room temperature)
  • 3 cups/360 grams confectioners' sugar (sifted)
  • 4 ounces/113 grams good-quality​ white chocolate (melted and cooled)
  • 2 teaspoons vanilla extract
  • 2 to 3 tablespoons whipping cream (or soymilk)

Steps to Make It

  1. Gather the ingredients.

  2. Preheat the oven to 350 F/177 C. Grease and flour two 8 or 9-inch cake pans, knocking out any excess flour. (Alternatively, lightly grease the pans and line the bottoms with parchment paper, then oil the parchment.)

  3. In a large bowl, whisk together the flour, sugar, matcha, baking powder, baking soda, and salt. 

  4. In another large bowl, whisk together the sour cream, eggs, oil, and vanilla. Slowly add the wet ingredients to the dry, whisking until smooth. (Switch to a spoon or use electric beaters if you find the batter too thick to whisk easily.)

  5. Divide the batter evenly between the two cake pans, smoothing the tops with a spatula. Bake the cakes in the preheated oven until they are firm to the touch, begin to pull away from the sides of the pan, and a tester inserted in the center comes out clean, about 25 to 30 minutes.

  6. Allow the cakes to cool on a rack in their pans for 10 minutes. Run a sharp knife around the edge of each cake, then invert onto the cooling rack. Remove the pans and allow the cakes to cool completely before frosting.

  7. To make the frosting: beat the butter in a stand mixer or with handheld beaters until smooth and creamy. Beat in the confectioner's sugar at low speed, just until incorporated. Add the white chocolate, vanilla, and cream, and beat on medium speed for about 3 minutes more, or until the frosting is light and fluffy.

  8. When the cake has cooled completely, place one layer on a cake plate. Spread with about 3/4 cup of the frosting, then top with the second layer. Spread the top and sides of the cake with the remaining frosting. 

  9. Enjoy!


There are several brands of kosher-certified matcha. As a specialty tea, it's easiest to find at gourmet grocers, Whole Foods or health food stores. Or, order online, from a purveyor such as Republic of Tea. Look for matcha powder, not tea bags that blend a bit of matcha with green tea leaves.

Recipe Variations

Green Tea Cake with White Chocolate Buttercream and Green Tea Filling:

You can also make a green tea filling for the cake. After you make the white chocolate buttercream, scoop about 1 cup of frosting into a bowl. Add 2 teaspoons of matcha green tea powder, and beat until the tea is incorporated and the frosting is green. Use the green tea filling between the cake layers, and the white chocolate buttercream to frost the top and sides of the cake. If desired, reserve a small amount of green tea filling, and use it in a piping bag to decorate the frosted cake.

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