Summer Day Sheet Cake

Ingredients

• 2 3/4 cups cake flour
• 2 1/2 teaspoons baking powder
• 1/2 teaspoon salt
• 1 cup unsalted butter
• 1 1/2 cups white granulated sugar
• 4 large eggs
• 2 teaspoons vanilla extract
• 1 teaspoon lemon extract
• 1 cup milk
• 2 tablespoons lemon zest
• 2 (8-ounce) blocks cream cheese
• 1/2 cup unsalted butter
• 2 1/2 cups powdered sugar
• 1 teaspoon vanilla extract
• sprinkles, for topping
• candied lemon slices, optional, for topping