Preheat oven to 350 degrees and grease and flour two 8 inch round cake pans
In a medium sized bowl whisk together the flour, baking powder and salt and set aside.
In another bowl combine the milk, sour cream, vanilla and maple extract. Blend with a fork and set aside.
In the bowl of your mixer beat the butter until smooth. With the mixer on medium speed slowly add the sugar and mix 4 to 5 minutes.
Add the eggs one at a time, mixing after each egg until no streaks of egg yolk color remains.
With the mixer on low speed, add the flour mixture to butter mixture alternating with the milk mixture. Begin and end with the flour mixture ( 3 additions of dry and 2 of liquid)
Pour into 2 greased and floured 8 inch round pans.
Bake at 350 degrees for 30 to 35 minutes or until a toothpick inserted in the center comes out clean. Let the cake layers cool in the pans 10 to15 minutes then turn out.
Makes 7 cups batter. Also works for cupcakes (little to no dome)