Ingredients:

  • 1 cup (225g) unsalted butter, softened
  • 1 cup (200g) granulated sugar
  • 2 large eggs, room temperature
  • 2 tbsp (30ml) fresh lemon juice
  • 1 tbsp (6g) lemon zest
  • 1 tsp (5ml) vanilla extract
  • 2 ½ cups (310g) all-purpose flour
  • 1 tsp (5g) baking powder
  • ½ tsp (3g) salt
  • 8 oz (225g) cream cheese, softened
  • ¼ cup (57g) unsalted butter, softened
  • 3 cups (360g) powdered sugar
  • 1 tbsp (15ml) fresh lemon juice
  • 1 tsp (2g) lemon zest

Instructions:

  1. Preheat the oven to 350°F (175°C) and line a 9x13 inch baking pan with parchment paper.
  2. Cream together 1 cup softened butter and granulated sugar until pale and fluffy.
  3. Beat in the eggs one at a time, then stir in 2 tbsp lemon juice, 1 tbsp lemon zest, and vanilla extract.
  4. In a separate bowl, whisk together all-purpose flour, baking powder, and salt.
  5. Gradually fold the dry ingredients into the wet mixture until just combined; do not over-mix.
  6. Spread the batter evenly into the prepared pan and bake for 20–25 minutes until edges are barely golden.
  7. Allow the bars to cool completely in the pan.
  8. Beat softened cream cheese and ¼ cup butter together until smooth.
  9. Gradually add powdered sugar, 1 tbsp lemon juice, and 1 tsp lemon zest; whip on high for 2 minutes until airy.
  10. Spread the frosting evenly over the cooled bars and chill in the refrigerator for 1 hour before slicing into 24 squares.