01 - Preheat oven to 350°F. Line a 9x13-inch baking sheet with parchment paper and lightly grease with butter or cooking spray.
02 - Whisk together flour, granulated sugar, salt, and baking powder in a large mixing bowl until well incorporated.
03 - In a separate bowl, beat eggs with milk, melted butter, and vanilla extract until smooth and fully combined.
04 - Pour wet ingredients into dry ingredients. Fold gently with a spatula until just combined, being careful not to overmix.
05 - Spread batter evenly onto prepared baking sheet. Bake for 12 to 15 minutes until cake springs back when lightly touched in the center. Cool completely on wire rack.
06 - While cake cools, beat heavy cream with powdered sugar and vanilla extract using an electric mixer until stiff peaks form.
07 - Gently remove cooled cake from pan and place on a clean work surface. Trim edges with a sharp knife for straight, even sides.
08 - Spread whipped cream evenly over cake surface, leaving a 1/2-inch border along one long edge. Sprinkle diced strawberries uniformly over the cream layer.
09 - Starting from the long edge opposite the border, carefully roll cake tightly using parchment paper to guide and support the roll.
10 - Wrap rolled cake securely in parchment paper. Refrigerate for 20 minutes to firm up the filling and set the roll shape.
11 - Remove from refrigerator and unwrap. Slice roll crosswise into 8 even pieces. Top each piece with a strawberry slice and optional mint sprinkle. Serve chilled.