Lily Rivera, 5, of Franklin Park works on her creation at the Chocolate Iron Chef event at the Northlake Public Library on Monday, Feb. 4. | Natasha Wasinski~for Sun-Times Media

The Jimenez sisters -- Emily, 17, and Jill, 12, of Northlake -- attended the Chocolate Iron Chef event at the Northlake Public Library on Monday, Feb. 4. Emily's tipi-like creation nabbed her top prize - a heart-shaped box of candy. | Natasha Wasinski~for Sun-Times Media

Jesse Vasquez, 12, of Northlake, created a Mayan temple at the Chocolate Iron Chef event at the Northlake Public Library on Monday, Feb. 4. | Natasha Wasinski~for Sun-Times Media

Monserat Gonzalez, 11, of Stone Park, at the Chocolate Iron Chef event at the Northlake Public Library on Monday, Feb. 4. | Natasha Wasinski~for Sun-Times Media

Siblings Lily Rivera, 5, and Ezequiel, 14, of Franklin Park at the Chocolate Iron Chef event at the Northlake Public Library on Monday, Feb. 4. | Natasha Wasinski~for Sun-Times Media

Ezequiel Rivera, 14, of Franklin Park, works on his creation at the Chocolate Iron Chef event at the Northlake Public Library on Monday, Feb. 4. | Natasha Wasinski~for Sun-Times Media

Participants used all sorts of no-bake ingredients to concoct their sticky creations. | Natasha Wasinski~for Sun-Times Media