We have a few teardrop shaped ones with handles at the pointy end that are to be used for fajitas, or small steaks.
You heat them in the oven at 450 to 500 °F, then place your mostly finished food on them just before serving.
For the steaks, you place the par-grilled meat on the hot plate, then a chunk of butter and a splash of Maggi sauce or Worcestershire so it sizzles as it finishes cooking.
Similarly with fajitas, you separately grill your chicken, shrimp, or beef strips, and briefly saute bell pepper and onion slices. Once ready, you put the meat down on the hot plate, then the veggies, then a splash of Mexican style hot sauce.