Preheat your oven to 350°F (175°C). Grease and line the bottom of the cake pans with parchment paper.

In a bowl, whisk together the flour, baking powder, and salt until well combined.

In a large mixing bowl, cream together the butter and sugar until light and fluffy, about 3-4 minutes.

Add eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

Gradually add the dry ingredients to the wet mixture, alternating with the milk. Begin and end with the dry ingredients. Mix until just combined.

Divide the batter evenly between the prepared cake pans. Smooth the tops with a spatula.

Bake in the preheated oven for 25 minutes or until a toothpick inserted in the center comes out clean. Allow the cakes to cool in the pans for 10 minutes, then transfer to a cooling rack to cool completely.

While the cakes are cooling, prepare the chocolate ganache. Heat the heavy cream in a saucepan until just simmering. Pour it over the chopped chocolate in a mixing bowl. Let sit for 5 minutes, then stir until smooth.

For the buttercream frosting, beat the room temperature butter with an electric mixer until creamy. Gradually add the powdered sugar, vanilla extract, and milk until you reach your desired consistency.

Once the cakes are completely cool, level the tops if necessary. Place one layer on a serving platter. Spread a layer of chocolate ganache on top and allow it to set slightly.

Add the second layer of cake on top. Frost the entire cake with buttercream frosting. Decorate as desired with additional ganache or chocolate shavings.

Slice and serve your beautiful J'Adore Layer Cake. Enjoy!