01 - Preheat oven to 350°F. Grease an 8x8-inch baking pan and line with parchment paper.
02 - In a large mixing bowl, whisk together melted butter, granulated sugar, and strawberry puree until fully integrated.
03 - Add eggs and vanilla extract to the mixture, whisking until smooth.
04 - In a separate bowl, thoroughly whisk flour, baking powder, and salt.
05 - Fold dry ingredients into the wet batter until just combined. Avoid over-mixing.
06 - Pour the batter into the prepared pan and smooth the surface with a spatula.
07 - Bake for 22 to 25 minutes, or until the edges are set and a toothpick inserted in the center yields moist crumbs.
08 - Allow to cool completely in the pan on a wire rack.
09 - In a small bowl, whisk together powdered sugar, strawberry puree, and lemon juice until smooth and pourable.
10 - Spread glaze evenly over cooled brownies. Let glaze set for 15 minutes, then cut into 16 squares and serve.