To make Hot Reuben Dip in the oven, preheat oven to 400 degrees. Coat a pie plate or oven-safe skillet with nonstick spray.
In a large bowl, combine cream cheese, corned beef, Swiss cheese, sauerkraut, sour cream, and dressing and mix well. Spread into prepared pie plate and bake until hot and bubbly, about 15 to 20 minutes. Serve with crackers or chips.
Corned beef: Deli corned beef is great, and so is leftover St. Patrick's Day corned beef you make yourself (I usually buy deli meat, because this is a dip for year-round enjoyment, not just in March).
Sauerkraut: Fermented cabbage adds texture, acidity, and flavor. I make my own sauerkraut when I have the chance, but canned works well too.
Thousand Island dressing: Make it homemade if you want to (it's just mayo, bread and butter pickles, ketchup, lemon juice, and garlic).
Crackers: If you run out of crackers or are craving flavors more similar to a reuben sandwich, lightly toast rye bread and cut each slice into quarters. Melba rye chips work well too.
Yield: One batch of the recipe makes enough for 8 servings as a snack. We recommend doubling it for a family; you'll want more.
Make ahead: Prepare the dip in the skillet up to 3 days ahead and store it in the refrigerator until it's time to bake.
Stove-top method: To save time, mix the the corned beef, sauerkraut, Swiss cheese, cream cheese, sour cream, and Thousand Island dressing in a saucepan on the stove. Cook over medium heat until hot, stirring occasionally so nothing burns on or sticks to the bottom of the pan.
Slow cooker method: For a hands-off slow and low approach, combine the corned beef, sauerkraut, Swiss cheese, cream cheese, sour cream, and salad dressing in a crockpot and cook on HIGH for 2 to 3 hours or LOW for 4 to 6 hours.
Broiler: Start the dip on the stove, transfer to a skillet, then broil until the top of the dip is golden brown.
Corned beef vs. pastrami: Corned beef and pastrami both come from beef brisket, but different parts of the cut. Pastrami is smoked and usually rubbed with more spices during the process, though. And yes, you can and should make this delicious dip with pastrami, too.