Preheat oven to 350°F.
Before starting to mix the cake, prep 8" pans by spraying with Baker's Joy or other cooking spray on bottom and sides. Line the bottom with an 8" parchment paper round.
Cream the room temperature butter with he granulated sugar for about 2 minutes, scraping bowl halfway.
On MED-HIGH speed, add the room temperature eggs, one at a time, until blended in. Then, increase speed to HIGH and beat until light and fluffy.
In a separate bowl, whisk together the flour and baking powder.
In the measuring cup with the milk, blend in the vanilla.
On MED-LOW speed, add in flour alternatively with the milk. Increase the speed to HIGH and mix for about 2 more minutes.
Place 1-1/4 cups of batter in each prepared pan. Divide up any remaining batter. Use an offset spatula to evenly spread batter to edges.
Bake for 15-18 minutes or until edges and top are lightly golden. Remove to cooling racks for about 5 minutes. Then, run thin knife or offset spatula around the edges and gently remove cakes leaving parchment paper attached. Allow them to cool completely before icing.