I think i have a recipe for passionfruit yoghurt cupcakes, the yoghurt keeps them pretty moist! It may have orange in it too tho, i will seek and find!

EDIT: Found it, probably not the one you're after but they are super yummy

Makes 12

Ingredients

  • 125g unsalted softened butter
  • 3/4 cup caster sugar
  • 1 1/2 tablespoons finely grated orange rind
  • 2 eggs
  • 1/4 cup fresh orange juice
  • 2 passionfruit, pulp reserved
  • 2/3 cup Greek-style yoghurt
  • 1 1/3 cups sifted self-raising flour
  • 1/2 teaspoon baking powder
Method

  1. Preheat oven to 170?C. Using electric beaters, beat butter, caster sugar and orange rind in a large bowl for 4-5 minutes or until light and fluffy. Gradually add eggs, and beat until well combined.
  2. Using a large metal spoon, fold through orange juice, the passionfruit pulp, yoghurt, flour and baking powder until just combined.
  3. Spoon the cake mixture into small patty cases. Bake for 15-20 minutes or until golden and a skewer inserted into the centre of a cupcake comes out clean. Remove from oven and serve warm.