01 - Preheat oven to 350°F. Grease and line an 8x8-inch baking pan with parchment paper.
02 - In a large bowl, whisk together melted butter, granulated sugar, and strawberry puree until fully blended.
03 - Add eggs and vanilla extract to the wet mixture. Mix until smooth and homogeneous.
04 - In a separate bowl, whisk together all-purpose flour, baking powder, and salt.
05 - Fold the dry ingredients into the wet mixture until just combined, avoiding over-mixing.
06 - Transfer batter into the prepared pan, smoothing the top with a spatula.
07 - Bake for 22 to 25 minutes, or until edges are set and a toothpick inserted in the center emerges with a few moist crumbs.
08 - Allow the brownies to cool entirely in the pan on a wire rack.
09 - Whisk powdered sugar with 2 to 3 tablespoons strawberry puree and lemon juice until smooth and pourable.
10 - Spread glaze evenly over cooled brownies. Let set for 15 minutes, then cut into squares and serve.