You love the hot pastrami sandwiches at your favorite deli, but have resisted trying to make them at home because you've heard it's too hard. Here's some good news: it's not that difficult. While you can heat the meat on its own, it's sometimes more successful to make the sandwich and heat the whole thing. Recreate your deli favorite in your kitchen without a culinary arts degree or any fancy equipment.
Wrap thin slices of the meat in aluminum foil or put it in a steamer basket, then place it over a pot of boiling water to steam it. For a few ounces of sliced pastrami, steam for 15 to 20 minutes. For a larger portion, steam for 30 minutes or until all the slices are thoroughly heated.
Put the slices of pastrami in a sandwich on a baking sheet and cover it loosely with aluminum foil. Heat the sandwich at 200 or 250 degrees Fahrenheit for 10 to 15 minutes or until the pastrami is heated through.
Cook sliced pastrami in buttered bread over medium heat in a skillet until the meat is heated through and the sandwich is golden brown. It should take three to four minutes per side.