A domestic cooking appliance for heating a food item includes a main housing; a cooking compartment in the main housing, the cooking compartment being configured to receive the food item to be heated, the cooking compartment having a first sidewall and a second sidewall; a gas burner that provides heat to the cooking compartment; a burner panel located between the gas burner and the cooking compartment; and a first fin protruding from the first sidewall and into the cooking compartment.