Step 1: Make the Cake

1. Preheat your oven to 350°F (175°C) and line a 9×13-inch baking pan with parchment paper.
2. In a medium bowl, whisk together the flour, baking powder, baking soda, and salt.
3. In a large bowl, cream together the butter and sugar until light and fluffy.
4. Add the eggs one at a time, beating well after each addition.
5. Mix in the vanilla extract.
6. Alternately add the dry ingredients and buttermilk, mixing until just combined.
7. Spread the batter evenly into the prepared pan and bake for 12–15 minutes, or until a toothpick inserted comes out clean.
8. Let the cake cool completely before cutting.

Step 2: Prepare the Filling

1. Beat the butter, powdered sugar, and vanilla extract together until smooth.
2. Add heavy cream and mix until light and fluffy.

Step 3: Assemble the Cakes

1. Once the cake is completely cool, use a heart-shaped cookie cutter to cut out heart shapes.
2. Spread a layer of filling onto half of the cake hearts, then top with another cake heart to make a sandwich.

Step 4: Coat with Pink Chocolate

1. Melt the white chocolate with coconut oil in the microwave in 30-second intervals, stirring in between.
2. Stir in pink food coloring until the desired shade is reached.
3. Dip each cake into the melted chocolate, ensuring a smooth, even coat.
4. Place on a wire rack or parchment paper to set.

Step 5: Decorate and Serve

1. Drizzle with white icing and add sprinkles if desired.
2. Allow to set completely before serving.