In a medium bowl, combine sliced strawberries with 1/4 cup of granulated sugar. Toss gently and let them sit for about 20-30 minutes to draw out the juices, creating a natural syrup.
Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans. In a large mixing bowl, whisk together the flour, baking powder, and salt.
In another bowl, cream the softened butter and 3/4 cup of granulated sugar until light and fluffy, about 3-5 minutes.
Beat in the egg and vanilla extract until well combined.
Gradually add the flour mixture to the butter mixture, alternating with the milk, starting and ending with the flour mixture. Mix until just combined, being careful not to overmix.
Divide the batter equally between the two prepared cake pans. Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean. Let the cakes cool in the pans for 10 minutes before transferring them to wire racks to cool completely.
In a medium bowl, whip the heavy cream with 2 tablespoons of powdered sugar and 1 teaspoon of vanilla extract until soft peaks form.
Once the cakes are completely cool, place one layer on a serving platter. Top with half of the macerated strawberries (including syrup) and a generous layer of whipped cream.
Place the second cake layer on top and repeat the process with the remaining strawberries and whipped cream.
Optionally, garnish the top with additional whole strawberries or mint leaves for a pop of color.
Notes
For best results, use fresh strawberries and serve immediately after assembling.