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Super Moist Grapefruit Cake

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A moist and refreshing grapefruit cake soaked with citrus syrup and topped with creamy buttercream frosting. Bright, tangy, and sweet, this cake is perfect for spring gatherings or as a cheerful dessert year-round.

Ingredients

2 cups all-purpose flour

1 3/4 teaspoons baking powder

1/2 teaspoon kosher salt

1 1/3 cup granulated sugar

1 tablespoon grapefruit zest

2 large eggs

1 cup whole milk

3/4 cup canola oil

1 teaspoon vanilla extract

1 cup grapefruit juice (from 2 grapefruits)

2/3 cup granulated sugar (for syrup)

1 container Pillsbury Buttercream Frosting

1/2 cup unsalted butter, softened

1/4 cup water

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan or two round cake pans.
  2. In a mixing bowl, whisk together flour, baking powder, and salt.
  3. In another bowl, combine sugar and grapefruit zest, rubbing together with your fingers to release oils.
  4. Whisk in eggs, milk, oil, and vanilla until smooth.
  5. Gradually fold in the dry ingredients until well combined.
  6. Pour the batter into the prepared pan and bake for 35–40 minutes, or until a toothpick inserted in the center comes out clean.
  7. While baking, make the syrup by combining grapefruit juice and sugar in a saucepan. Simmer until sugar dissolves, then let cool slightly.
  8. When cake is done, poke holes in the warm cake with a skewer and slowly pour syrup over the top to soak in.
  9. For frosting, beat butter until fluffy. Mix in prepared buttercream frosting and water until smooth and spreadable.
  10. Once cake is completely cool, spread frosting evenly over the top before serving.

Notes

Use ruby red grapefruits for a sweeter, less bitter flavor.

Zest only the colored peel to avoid bitterness from the white pith.

Can be made in two round pans for a layered cake.

Top with candied grapefruit peel or zest curls for decoration.

Skip the frosting and use only syrup for a lighter version.

Nutrition

Find it online: https://justsosavory.com/super-moist-grapefruit-cake/