An aerosol-generating smoking device, is provided, including: a heater configured to heat an aerosol-forming substrate, the heater including an electrically resistive heating element and a heater substrate, the electrically resistive heating element including a first portion formed from a first material and a second portion formed from a second material different than the first material, configured such that, when an electrical current is passed through the electrically resistive heating element, the first portion is heated to a higher temperature than the second portion as a result of the electrical current.