1. Preheat oven to 350 degrees.
2. In a large bowl, fork sift the flour, baking powder and salt together. Set aside.
3. In a separate small bowl, combine the buttermilk and baking soda together. Set aside.
4. Fit a stand mixer with the paddle attachment. Add butter and the sugars to the mixing bowl. Beat together over medium speed until light and fluffy. Then, add in the eggs, one at a time, until combined.
5. Gradually add the flour mixture into the batter. Continue to mix until the batter is smooth.
6. Lower the mixer speed slightly, then slowly pour the buttermilk/baking soda mixture into the batter. Mix until smooth.
7. Blend in the lemon juice and vanilla extract.
8. Grease and flour two 9-inch cake pans. Divide the southern caramel cake batter between the 2 pans and bake 40-45 minutes, or until golden brown and the cakes spring back when lightly touched in center.
9. Place on wire rack to cool. Remove the southern caramel cakes from the pans once the pans are slightly warm to the touch.
10. Once the cakes are cool, divide each layer into two.
11. Fill and frost the cake with my Southern Caramel Icing Recipe.