steps

1. 1.

   Preheat oven to 350°F and grease a 9x13 inch baking pan.

2. 2.

   In a bowl, cream butter and sugar until light and fluffy. Add eggs one at a time, beating well after each addition.

3. 3.

   Stir in vanilla extract.

4. 4.

   In a separate bowl, combine flour, baking powder, and salt. Gradually add to the wet mixture, alternating with milk.

5. 5.

   Pour batter into prepared pan and bake for 30-35 minutes, or until a toothpick inserted comes out clean.

6. 6.

   Let cool before serving.