Strawberry Cake

INGREDIENTS

• 6 tablespoons unsalted butter, softened, plus more for pie plate
• 1 1/2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon salt
• 1 cup plus 2 tablespoons sugar
• 1 large egg
• 1/2 cup milk
• 1 teaspoon pure vanilla extract
• 1 pound strawberries, hulled and halved