01 - Preheat oven to 350°F. Grease and flour a Mary Ann cake pan or shallow tart pan with a raised center.
02 - In a medium mixing bowl, whisk together all-purpose flour, baking powder, and salt until evenly blended.
03 - In a large bowl, beat eggs and granulated sugar using an electric mixer on high speed for 3 to 4 minutes, until the mixture is pale and thick.
04 - Gently fold the flour mixture into the beaten eggs and sugar, blending just until combined to avoid overmixing.
05 - In a separate small bowl, mix whole milk, melted unsalted butter, and vanilla extract. Gradually fold into the batter until the mixture is homogenous.
06 - Pour the batter into the prepared pan, smoothing the surface with a spatula. Bake for 22 to 25 minutes, or until a toothpick inserted into the center emerges clean.
07 - Allow the cake to cool in the pan for 10 minutes. Invert onto a wire rack and cool completely.
08 - Whip heavy cream, powdered sugar, and vanilla extract in a chilled mixing bowl using an electric mixer until soft peaks form.
09 - Spoon the whipped cream evenly into the well of the cooled cake. Top with fresh mixed berries and serve immediately.