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Ruby Red Grapefruit Cupcakes Recipe

Ruby Red Grapefruit Cupcakes

Prep Time 20 minutes Cook Time 40 minutes

by Anne Coleman

What you'll need


  • 1 1/2 cups flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 cup sugar
  • 2 teaspoons ruby red grapefruit zest
  • 1/2 cup (1 stick) unsalted butter, softened
  • 2 large eggs
  • 2 Tablespoons ruby red grapefruit juice
  • 1/2 cup milk
  • 1 drop red food coloring (optional)

Ruby Red Grapefruit Frosting

  • 4 ounces cream cheese
  • 1/2 stick (1/4 cup) unsalted butter
  • 2 Tablespoons ruby red grapefruit juice
  • 1 Tablespoon ruby red grapefruit zest
  • 4 cups powdered sugar


Yields 12 cupcakes

How to make it

  1. Preheat oven to 350° F. Grease or line 12 muffin cups.
  2. Combine flour, baking powder, baking soda and salt and set aside.
  3. Cream together butter and sugar. Add zest, juice and food coloring and stir until smooth.
  4. Add eggs and continue to beat until well combined.
  5. Add flour mixture and milk alternately stirring to mix.
  6. Fill muffin cups 2/3 full. Do not overfill or the cupcake tops will spread too far before rising. Bake for 18-20 minutes.
  7. To make Ruby Red Grapefruit Frosting, beat butter and cream cheese together until smooth. Add juice and zest and beat again.
  8. Add powdered sugar, a cup at a time, and beat after each addition until of a spreadable consistency.
  9. Allow cupcakes to cool completely before frosting with Ruby Red Grapefruit Frosting.