Step 1: Prepare the Cake Batter

1. Preheat your oven to 350°F (175°C). Grease and line two 8-inch round cake pans with parchment paper.
2. In a large bowl, cream together the softened butter and granulated sugar using an electric mixer until pale and fluffy (about 3–4 minutes).
3. Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
4. Sift together the flour, baking powder, and salt in a separate bowl. Gradually fold the dry ingredients into the wet mixture, alternating with milk. Mix until just combined—do not overmix.

Step 2: Bake the Cakes

1. Divide the batter evenly between the prepared pans and smooth the tops with a spatula.
2. Bake for 25–30 minutes, or until golden brown and a toothpick inserted into the center comes out clean.
3. Let cakes cool in their pans for 10 minutes, then transfer to a wire rack to cool completely.

Step 3: Prepare the Filling

1. Slightly warm the jam in the microwave for easier spreading and ensure it’s smooth.
2. In a chilled bowl, whip heavy cream with powdered sugar until soft peaks form—be careful not to overwhip.

Step 4: Assemble the Cake

1. Place one cake layer on a serving plate or cake stand. Spread an even layer of jam over the top.
2. Pipe or spread whipped cream over the jam layer evenly.
3. Place the second cake layer on top and gently press down to secure it. Dust with powdered sugar and garnish with fresh berries and mint leaves if desired.