Add the eggs one by one, mixing well between each one.
3 medium eggs
Add the lime zest, lime juice, salt and polenta, and mix until fairly smooth.
Zest of two limes, Juice of one lime, 110 g polenta, A grinding of salt
Pour the mixture into the silicone pan and place it in your slow cooker (I used a 5.7 litre one). Add some water beneath the pan if required by your slow cooker.
Replace the lid, tucking a tea towel beneath it to stop water dripping onto the cake.
Cook on high for approx 2 hours or until a toothpick comes out clean.
Allow to cool completely then carefully remove from the silicone pan.
Dust with icing sugar to serve, and add some mascarpone on the side for an extra treat.