Founder of Sprinkles Cupcakes and "Cupcake Wars" judge Candace Nelson steps into the Walk In to talk about her role in the cupcake craze, her success as both an entrepreneur and a mother, and the story behind her ingenious idea of creating the 24-hour Cupcake ATM! She also talks about trading in a muffin tin for a pizza paddle in her new restaurant venture, Pizzana.