Preheat the oven to 180 degrees/gas mark 4.
Cream the butter and sugar together in a mixing bowl. Add the eggs and the flour gradually, folding as you go.
Prepare 12 cupcake cases in a muffin tin.
Add the cake mixture until you have filled the cases evenly. These should be quite full.
Place these in the oven for 20 minutes, or until golden brown. As these are quite large cupcakes, I used a cake tester just to make these they were baked throughout.