Preheat the oven to 350°F, grease an 8×8-inch baking pan and set aside.
In a large mixing bowl mix together 2 cored and sliced apples, 1 tbsp lemon juice, 1 tbsp granulated sugar, and 1 tbsp cinnamon. Set aside.
In separate smaller bowl whisk all dry ingredients (1 cup all-purpose flour, 1/2 tsp baking powder, 1/2 tsp baking soda, and 1/4 tsp salt) and set aside.
In another mixing bowl, using a hand mixer or a spatula, cream together 1/2 cup softened butter and 2/3 cup granulated sugar until smooth consistency.
Add 2 eggs, 1/4 cup sour cream,1/4 cup milk, 1 tsp vanilla extract and mix again.
Add dry ingredients to the mixture. Using a spatula, fold the ingredients together until well combined.
Pour the batter in the baking pan and top it with sliced apples, covered with sugar and cinnamon, in three rows. Bake at 350°F for about 35-40 minutes or until a toothpick comes out clean.
Remove the cake from the oven and let it cool off before serving. Enjoy!