Preheat the oven to 350° degrees F.butter two inch square cake pan and line it very well.

Whisk 3cups flour,baking powder and salt in a bowl untill well combined.beat 2 sticks butter and the sugar in a large bowl with a mixer in a medium high speed untill light and fluffy for about 3minutes.

Reduce the mixer speed to medium,beat in eggs one at a time.scraping down the bowl as needed.beat in the vanilla.

Beat in the flour in 3 batches,alternating with the milk,begining and ending with the flour,untill just smooth.

Divide the batter between the prepared pan.bake untill the cake is slightly golden on the top.

Insert a toothpick in the middle onces it comes out clean is ok.