Preheat to 350°F. Grease 9x13 pan.

Mix together flour, baking powder. Set aside

Cream sugar and butter until light and fluffy. Add eggs one at a time, beating thoroughly after each addition. Add flour mixture alternately with milk, beating to combine. Finally stir in vanilla. Pour into greased pan.

Bake for 40-45 minutes or until tester comes out clean.