Preheat your oven to 350 °F.
Grease 2 (9-inch) round cake pans with cooking spray.
Line the bottom of each pan with parchment paper and then dust with a little flour.
In a bowl, add flour, baking powder and salt and with a wire whisk, mix well.
In a second small bowl, blend together the heavy cream and water.
In a third large bowl, addthe butter and sugar and with a hand-held electric mixer,beat on medium-high speed until light and fluffy.
Add in eggs one at a time and mix on medium speed until just blended.
Add the vanilla extract and beat until well combined.
Add the flour mixture in 3 portions, alternating with cream mixture until just smooth.
Place the mixture into the prepared pans evenly.
Bake for about 30-35 minutes.
Remove the cake pan from oven and place onto the wire racks to cool for about 10minutes.
Now, invert the cake onto the wire rack tocool completely before slicing.
Cut the cake into desired-sized slices andserve.