I adapted the recipe from the feijoa tart recipe I found here:

2 large eggs
150g white sugar
100g butter
zest of 1 lime (or more to taste)
approx 1.5cm piece of fresh ginger, grated (less or more to taste)
150 ml milk
175g flour
3 teaspoons baking powder
enough sliced fruit to cover the surface of the tart - I just topped the feijoas and cut them in half. Leaving the skins on gives a tartness to the final tart (apt, in this case!)
  1. Whisk the eggs, sugar, lime zest and ginger until thick and creamy.
  2. Put butter and milk into a saucepan and stir until just boiling. Remove from heat.
  3. Sift flour and baking powder into the egg mixture, then pour in the milk mixture. Fold all the ingredients together until smooth.
  4. Pour into a flat dish lined with baking paper. Arrange the sliced fruit over the top.
  5. Bake at 180°C for 20-30 mins.