Preheat oven to 350°F. Grease and flour two 8-inch round cake pans.
In a large bowl, mix flour, sugar, baking powder, and salt.
Add butter, milk, eggs, and vanilla. Beat until smooth.
Divide batter evenly between the pans. Bake for 25-30 minutes or until a toothpick comes out clean.
Let cakes cool in pans for 10 minutes, then transfer to a wire rack.
Whip heavy cream and powdered sugar until stiff peaks form.
Place one cake layer on a plate. Spread half the whipped cream and top with sliced strawberries.
Add the second cake layer and repeat with remaining cream and strawberries.
Serve immediately or refrigerate for up to 2 hours.