Funfetti Sugar Cookie Cake

Bahan-bahan (9 porsi)

• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 3/4 cup (150g) granulated sugar
• 1 large egg + 1 egg yolk*
• 2 teaspoons pure vanilla extract
• 1 and 1/2 cups (188g) all-purpose flour (spooned & leveled)
• 1/4 teaspoon salt
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1 and 1/2 teaspoons cornstarch
• 2/3 cup (120g) white chocolate chips
• 1/2 cup (80g) rainbow sprinkles (not nonpareils)*
• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 1 and 3/4 cups (150g) confectioners’ sugar
• 2 Tablespoons (30ml) heavy cream or half-and-half*
• 1 teaspoon pure vanilla extract
• 1/4 teaspoon almond extract*
• salt, to taste
• optional: extra sprinkles for decorating on top