Momofuku Milk Bar's Birthday Layer Cake | TasteToronto

Ingredients

• Nonstick vegetable oil spray
• 2 cups cake flour
• 1 ½ teaspoons baking powder
• ¾ teaspoon kosher salt
• ¼ cup plus 2 tablespoons rainbow sprinkles, divided
• ½ cup buttermilk
• ⅓ cup grapeseed oil
• 2 teaspoons clear imitation vanilla extract, preferably McCormick brand
• 1 ¼ cups granulated sugar
• ⅓ cup vegetable shortening
• 4 tablespoons (½ stick) unsalted butter, room temperature
• 3 tablespoons light brown sugar
• 3 large eggs
• ¾ cup cake or all-purpose flour
• ½ cup granulated sugar
• 2 tbs light brown sugar
• 2 tbs rainbow sprinkles
• ½ tsp baking powder
• ½ tsp kosher salt
• ¼ cup grapeseed oil
• 1 tbs clear imitation vanilla extract
• ½ cup (1 stick) unsalted butter, room temperature
• ¼ cup vegetable shortening
• 2 ounces cream cheese, room temperature
• 2 tbs light corn syrup
• 1 tbs plus 1 tsp clear imitation vanilla extract, divided
• 1 ¼ cups powdered sugar
• ¼ tsp baking powder
• ⅛ tsp citric acid (or ½ tsp fresh lemon juice)
• ¼ cup milk