Preheat your oven to 350°F (175°C) and prepare a 9x13 inch baking pan. Grease it lightly or line it with parchment paper for easy removal.

In a large mixing bowl, pour in the melted butter and brown sugar. Stir until well combined, until it resembles a smooth mixture.

Crack in the two eggs, and add the vanilla extract. Whisk these into the butter-sugar mixture until fully blended, giving it a creamy texture.

Sprinkle in the baking powder, salt, and flour. Gently fold the dry ingredients into the wet mixture until just combined. Be careful not to overmix; it's okay if a few flour streaks remain.

Delicately stir in the chopped strawberries, lemon zest, and lemon juice.

Pour the batter into the prepared baking pan and evenly spread it out. Bake for approximately 25-30 minutes, or until the tops are lightly golden and a toothpick comes out clean.

Allow the blondies to cool in the pan for about 10 minutes before transferring them to a wire rack. Once fully cooled, slice them into squares and enjoy!