1 - step 1 Heat the oven to 180C/160C fan/gas 4.

2 - Melt 25g butter and generously brush into the holes of a mini bundt tins.

3 - Tip a little flour into each hole and shake to coat, then tip out the excess.

4 - Beat the butter, caster sugar and a pinch of salt together using an electric whisk.

5 - Add the eggs, one at a time, beating well after each addition.