Funfetti Birthday Cake | RICARDO

Ingredients

• 3 ½ cups (525 g) unbleached all-purpose flour
• 1 tbsp baking powder
• 1 tsp baking soda
• ½ tsp salt
• 2 cups (500 ml) buttermilk
• 2 tsp (10 ml) vanilla
• 1 tsp (5 ml) white vinegar
• 1 ¾ cups (370 g) sugar
• 1 cup (250 ml) vegetable oil
• 4 egg whites (see note)
• 1 cup (250 ml) homemade sprinkles or store-bought
• 1 1/2 cup (320 g) sugar
• 8 egg whites
• 1 tsp (5 ml) vanilla
• 1 ¾ cups (395 g) unsalted butter, diced and softened for 20 minutes