1. Put the water, butter and salt in a pot and bring it up to the boil. Once boiling, pour in the Maize Meal whisking continuously. Cook for 2 minutes then put aside to cool.
2. Preheat the oven to 180C.
3. Once cool, press it into a greased 25cm spring form tart pan. Brush the beaten egg over the case. Bake the pastry in the oven for 5 minutes until it starts to crisp and set slightly.

Filling:

1. Preheat the oven to 170C.
2. Whisk the milk and eggs together. Then mix in the feta, cheddar and spinach. Season with salt & pepper.
3. Pour the mixture into the baked tart case and place in the oven. Bake for 30-40 minutes until the filling has set.

Remove from the oven and allow to cool. Serve slices with a side salad.