Sun Hat Cake - Pankobunny

Ingredients

• 1/4 cup + 2 tbsp milk
• 1 3/4 tsp vinegar
• 1/2 cup unsalted butter (room temperature)
• 1 cup + 2 tbsp brown sugar
• 2 eggs
• 1 1/2 cups all-purpose flour
• 1 tsp baking powder
• 1/4 tsp salt
• tan, red and blue buttercream (recipe here)