Vera's Caramel Cake - VeryVera

Ingredients

• floured baking spray
• 1 1/3 c unsalted butter, at room temperature
• 2 2/3 c granulated sugar
• 5 extra large eggs, at room temperature
• 4 c cake flour
• 4 tsp. baking powder
• 3/4 tsp. salt
• 2 c whole milk, at room temperature
• 1 1/3 tsp. pure vanilla extract
• 1 c unsalted butter
• 1 lb Dixie Crystals dark brown sugar
• 1/2 c whole milk
• 3 1/2 c confectioners' sugar, sifted