Preheat the oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
In a large mixing bowl, combine the flour, granulated sugar, baking powder, and salt. Add the softened butter, milk, eggs, and vanilla extract. Beat on medium speed for about 2 minutes until smooth and well combined.
Divide the batter evenly between the prepared cake pans. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. Let the cakes cool in the pans for 10 minutes, then transfer to wire racks to cool completely.
While the cakes are cooling, prepare the whipped cream. In a medium bowl, beat the heavy whipping cream, powdered sugar, and vanilla extract until stiff peaks form.
Once the cakes are completely cooled, place one layer on a serving plate. Spread a layer of whipped cream over the top and add half of the sliced strawberries. Place the second cake layer on top and repeat with the remaining whipped cream and strawberries.
For best results, chill the assembled cake in the refrigerator for at least 30 minutes before serving.