The best replacement for griddle is skillet.

The best alternatives to griddle are rated as following:
★★★★★  skillet
★★★★★  grill
★★  frying pan
★★  electric skillet
★★  french top
★  charbroiler
★  girdle
★  plancha
★  panini press
★  grill burger
★  gas griddle
  tru griddle
  cast aluminum griddle
  grill pan
  aluminum griddle
  hot plate
  electric griddle
  hamilton beach griddle
  cast iron skillet

Your alternative for griddle is not listed? Suggest!
Speaking about griddle, one probably shouldn't forget about oven.

Other search terms related to griddle and their ratings are:
★★★★★ oven
★ grill
★ broiler
You have in mind a companion for griddle and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of griddle in all years. Click on graph for more.
griddle
skillet
grill