01 - Preheat the oven to 350°F. Line an 8x8-inch baking pan with parchment paper, allowing overhang for easy removal.
02 - In a large bowl, whisk together melted butter and granulated sugar until smooth and creamy.
03 - Add eggs, vanilla extract, lemon zest, and lemon juice. Whisk until thoroughly combined.
04 - In a separate bowl, whisk together flour, baking powder, and salt until evenly distributed.
05 - Gradually fold dry ingredients into wet mixture until just incorporated. Avoid overmixing to maintain texture.
06 - Gently fold in fresh raspberries, taking care not to crush them excessively.
07 - Transfer batter to prepared pan, spreading evenly and smoothing the top surface.
08 - Bake for 28-32 minutes until edges are lightly golden and a toothpick inserted in center shows moist crumbs.
09 - Allow blondies to cool completely in the pan on a wire rack before glazing.
10 - Whisk together powdered sugar, lemon juice, and lemon zest until smooth and pourable consistency is achieved.
11 - Drizzle glaze evenly over cooled blondies. Let set for at least 10 minutes, then cut into 16 squares.