Ombre Sheet Cake
Author: 
Recipe type: Dessert
Prep time: 
Cook time: 
Total time: 
Serves: 12-16 servings
 
No need to make a fancy layer cake with this easy ombre icing technique for your sheet pan cakes. This cake tutorial couldn’t be easier with a simple white cake recipe topped with a simple buttercream frosting. Check out today’s tutorial for your next birthday cake!
Ingredients
  • 1 stick (½ cup) plus 1 tablespoon unsalted butter, room temperature, plus more for pan
  • 2 ¼ cup unbeached all-purpose flour, plus more for pan
  • 1 ½ teaspoons baking powder
  • ½ teaspoons baking soda
  • ¾ cup kosher salt
  • 1 cup sugar
  • 3 large eggs, room temperature
  • 1 teaspoon vanilla extract
  • 1 cup buttermilk, room temperature
  • Vanilla Buttercream (recipe below)
  • Natural food dyes in Berry and Sunflower (or your favorite shades)
Instructions
  1. Preheat the oven to 350 degrees. Butter a 9-by-13-inch baking pan. Dust the pan with flour. In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
  2. With an electric mixer, beat butter with sugar, until light and fluffy (about 5 minutes). Add eggs, one at a time, beating well with each addition, scraping down the bowl as needed. Beat in vanilla. Reduce speed to low and add dry ingredients in two batches, alternating with buttermilk, and beginning and ending with your flour mixture.
  3. Transfer batter to prepared baking pan, smoothing top with an offset spatula. Bake, rotating pan halfway through, until cake is golden and puffed and a cake tester comes out clean, 22-25 minutes. Transfer the pan to a wire rack to cool for 30 minutes. Turn out onto a wire rack to cool completely.
  4. Spread 2 ½ cups buttercream over top of cake with an offset spatula. Divide remaining buttercream among four small bowls (about ⅓ cup each). Use food dyes to create desired shades. Let stand 10 minutes to allow dyes to fully saturate.
  5. Transfer frostings into pastry bags (no tip required) and pipe a line of each color horizontally across top of cake in the desired order. Lightly drag a large offset spatula or bench scraper end to end across cake to create a blended effect. Add more frosting as desired . Be sure to wipe off the spatula or bench scraper completely between strokes.
Recipe by MomAdvice at https://www.momadvice.com/blog/2020/11/how-to-make-an-ombre-cake