In a large bowl, mix softened butter and sugar together until well combined. Whisk in the eggs, lemon juice and lemon zest. Add flour mix and stir with a spatula until smooth and combined. Pour batter into prepared baking pan and spread out evenly. Sprinkle raspberries over the top of the batter. Bake for approximately 25 minutes.
While the bars are baking make the glaze. Simply stir together the powdered sugar, lemon juice and zest. Pour over cooled bars.