Lemon-Lime Filled Butter Cookies | Canadian Goodness

Ingredients

• Cookie Dough:
• 1 cup (250 mL) unsalted Canadian butter
• at room temperature
• 3/4 cup (175 mL) icing sugar
• 2 cups (500 mL) all-purpose flour
• 1/2 cup (125 mL) cornstarch
• 2 tsp (10 mL) lemon zest
• 1 tsp (5 mL) lime zest
• 1 tsp (5 mL) vanilla extract
• 1/4 tsp (1 mL) salt
• Lemon-Lime Curd:
• 4 egg yolks
• 2/3 cup (150 mL) granulated sugar
• 1 tbsp (15 mL) lemon zest
• 1 tbsp (15 mL) lime zest
• 2 tbsp (30 mL) lemon juice
• 2 tbsp (30 mL) lime juice
• 1/4 cup (60 mL) cold Canadian butter
• cubed
• Buttercream Icing:
• 1/4 cup (60 mL) Canadian butter
• 1 1/4 cups (300 mL) icing sugar
• 2 tbsp (30 mL) Canadian whipping cream (35%)