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St. Patrick’s Day Ombre Cake

Isn't it beautiful? I'm not an expert baker or cake decorator by any means and yet, this Ombre Layer Cake is even achievable for me! Change up the colors to suit whatever the occasion and serve this all year round. It would be adorable for a baby shower, birthday party, or because it's Tuesday.

Course Dessert
Cuisine American
Keyword baking, layer cake
Prep Time 40 minutes
Cook Time 22 minutes
Total Time 1 hour 2 minutes
Servings 12
Calories 1212 kcal


White Cake

  • 3/4 cup unsalted butter softened to room temperature
  • 3/4 cup vegetable shortening
  • 3 cups granulated sugar
  • 12 egg whites room temperature
  • 1 1/2 tablespoon vanilla extract
  • 4 1/2 cups all-purpose flour
  • 1 1/2 tablespoon baking powder
  • 1/2 teaspoon salt
  • 1 ½ cup milk
  • Green food coloring

Buttercream Frosting

  • 2 cup unsalted butter room temperature
  • 8 cups powdered sugar sifted
  • 4 teaspoons vanilla
  • 1/2 cup milk
  • Green food coloring


  1. Instructions
  2. Preheat oven to 350 degrees.
  3. Cream butter, shortening and sugar. Add in the egg whites and vanilla and mix until smooth.
  4. Mix flour, baking powder, and salt. Add in the milk and blend until smooth.
  5. Divide batter between 5 bowls. Add drops of green food coloring into 4 of the bowls to make varying shades of green.
  6. Prepare five 8-inch round cake pans by spraying with non-stick cooking spray and lining the bottom with a parchment paper round. Divide the cake batter evenly between the pans.
  7. Bake in 350-degree oven for 18-22 minutes, or until a toothpick inserted in the middle comes out clean.
  8. Remove from the oven and let cool completely.
  9. To make the frosting, cream the butter until perfectly smooth. Add the powdered sugar and mix again until smooth.
  10. Add in the vanilla and then slowly add in the milk while mixing to reach desired consistency.
  11. Divide the frosting between 5 bowls. Add green food coloring to 4 of them, making shades of green similar to the cake batter.
  12. Level the top of each cake layer by slicing the rounded portion of the cake off. A cake leveler works best.
  13. Starting with the darkest green cake, put the cake top side down on a cake plate. Add a thin layer of the darkest shade of green frosting to the cake. Top with the second layer (next darkest shade), again with the leveled top side down. Top that with the corresponding frosting shade. Repeat this with the remaining cake layers.
  14. Pipe frosting around the outside of each cake layer, leaving a broad line of frosting. When all the cake layers have frosting piped along the outside, use a frosting scraper and blend the ombre frosting together as you level the frosting.
Nutrition Facts
St. Patrick’s Day Ombre Cake
Amount Per Serving
Calories 1212 Calories from Fat 513
% Daily Value*
Fat 57g88%
Saturated Fat 31g194%
Cholesterol 116mg39%
Sodium 175mg8%
Potassium 317mg9%
Carbohydrates 169g56%
Fiber 1g4%
Sugar 131g146%
Protein 10g20%
Vitamin A 1366IU27%
Calcium 133mg13%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.