INGREDIENTS
•
2 1/2 cups (354g) all-purpose flour
•
1 1/2 tsp baking powder
•
1/2 tsp salt
•
1 cup (210g) granulated sugar
•
1 Tbsp lemon zest
•
10 Tbsp (5 oz) unsalted butter, softened partially*
•
Seeds of 1 small vanilla bean
•
1 large egg
•
1 large egg white
•
3 Tbsp sour cream
•
1 tsp lemon extract
•
1 tsp vanilla extract
•
1/2 cup (4 oz) unsalted butter, softened
•
2 1/2 cups (297g) powdered sugar
•
2 tsp lemon zest
•
2 Tbsp fresh lemon juice
•
Yellow food coloring and sprinkles (optional)