Preheat oven to 350°F
Grease a 9 or 10 inch springform pan, set aside.
Sift together flour, baking powder and salt.
Cream together the butter and sugar until light and fluffy. This may take about 10 mins in a stand mixer.
Add in the eggs and vanilla and continue beating until smooth.
Fold in the flour mixture alternating with milk, starting and ending with flour. Fold until just blended.
Pour in springform pan. Bake for 25 minutes or until center is set and toothpick comes out clean.