Versatile surface heating cartridge for cooking appliance

In an appliance including a cooktop provided with at least one removable surface heating unit, a replaceable, integrated heating cartridge comprising:

• a lower container portion adapted to be positioned, at least in part, within an opening formed in the cooktop;
• a first heating element extending within the lower container portion;
• a removable food support member positioned in the lower container portion above the first heating element;
• a lid member having an upper surface and a lower surface, said lid member being movable, relative to the lower container portion, between a lowered position wherein the lid member substantially covers the lower container portion, and a raised position wherein an interior of the lower container portion is exposed;
• a second heating element carried by and extending along the lower surface of the lid member;
• and
• at least one control member for selectively activating and deactivating each of the first and second heating elements, wherein at least one of the first and second heating elements can be activated for selectively cooking food placed on the support member within the lower container portion.