01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, allowing overhang for easy removal.
02 - Mash diced strawberries with fork until juicy but still chunky. Set aside.
03 - Whisk melted butter and sugar in large bowl until combined. Add eggs and vanilla, whisk until smooth.
04 - Sift flour, cocoa powder, and salt into bowl. Fold gently until just combined—do not overmix.
05 - Fold mashed strawberries into batter.
06 - Pour batter into prepared pan. Smooth top with spatula.
07 - Bake for 28-32 minutes until toothpick inserted in center comes out with moist crumbs.
08 - Let brownies cool completely in pan.
09 - Puree strawberries. Whisk with powdered sugar and lemon juice until smooth. Drizzle over cooled brownies.
10 - Cut into squares and serve.