Melt the butter in the microwave, about 1 minute. In a large bowl add the yellow cake mix, the first box of instant pistachio pudding mix, eggs, club soda and melted butter. Stir until fully mixed ...

In a bowl, mix together the flour ... Bake for 30-40 minutes or until a metal skewer inserted in the centre of the cake comes out clean. Leave to cool in the tin.

This Watergate Cake graced the table at many potlucks and family gatherings. Everyone is always eager to get their piece.

Butter the inside of a deep 8-inch round cake pan, then line the bottom with a circle of parchment paper. Preheat the oven to 325°F. Melt the butter in a pan, then pour it into a large mixing bowl.