01 - Preheat oven to 350°F. Line a 9x13-inch baking sheet with parchment paper and lightly grease with butter or cooking spray.
02 - In a medium bowl, whisk together flour, sugar, salt, and baking powder until well combined.
03 - In a separate bowl, beat eggs, milk, melted butter, and vanilla extract until smooth. Pour wet mixture into dry ingredients and stir until just combined, being careful not to overmix.
04 - Spread batter evenly onto prepared baking sheet. Bake for 12-15 minutes until cake springs back when lightly touched. Allow to cool completely on a wire rack.
05 - While cake cools, whip heavy cream with powdered sugar and vanilla extract using an electric mixer or whisk until stiff peaks form.
06 - Carefully remove cooled cake from pan and place on a clean, flat surface. Trim edges for a neat appearance.
07 - Spread whipped cream evenly over cake surface, leaving a 1/2-inch border along one long side. Sprinkle diced strawberries uniformly over the cream layer.
08 - Starting from the long side opposite the border, tightly roll the cake using parchment paper to guide the roll. Refrigerate for 20 minutes to set the shape.
09 - Remove roll from refrigerator and slice into 8 even pieces. Top each piece with a strawberry slice and optional fresh mint. Serve chilled.