01 - Set oven to 350°F. Lightly grease and line an 8x8-inch baking pan with parchment paper, ensuring an overhang for easy removal.
02 - In a large bowl, whisk together melted butter, granulated sugar, and strawberry puree until thoroughly incorporated.
03 - Beat in eggs and vanilla extract until the mixture is smooth and homogeneous.
04 - In a separate bowl, whisk together all-purpose flour, baking powder, and salt to distribute leavening and seasoning evenly.
05 - Gently fold the dry mixture into the wet components, mixing just until no streaks of flour remain. Avoid over-mixing to preserve a tender crumb.
06 - Transfer batter to the prepared pan and spread evenly with a spatula, smoothing the surface for even baking.
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 to cool fully in the pan on a wire rack to prevent crumbling when slicing.
09 - In a bowl, whisk together powdered sugar, strawberry puree, and lemon juice until the glaze is smooth and pourable.
10 - Spread glaze evenly over cooled brownies. Allow to set for 15 minutes, then cut into squares and serve.