How to Heat Up a Fully Cooked Ham in a Crock Pot

Ham is a versatile meat that tastes great whether it's cold or heated up. While heating up a precooked ham in a Crock-Pot is not recommended by the USDA, warming a precooked ham in a Crock-Pot is fine. Here's how to go about it.

Ham is a versatile meat that tastes great whether it’s cold or heated up.
Credit: evgenyb/iStock/GettyImages

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The USDA explains that Crock-Pots, or slow cookers, rely on direct heat from within the pot and the steam trapped by a tightly covered lid to do their magic. In fact, slow cookers use less electricity than convection ovens and the low heat helps tenderize meat with less shrinkage. The University of Minnesota notes that slow cookers cook food at a low temperature, usually between 170 and 280 degrees Fahrenheit, over many hours.

Cooking, Heating and Warming Food

The USDA cautions against heating up a precooked ham in a Crock-Pot. In fact, heating up any type of meat in a Crock-Pot is not recommended. This is because if you put cold meat in the Crock-Pot, it could spend too much time thawing or heating up, giving bacteria a chance to multiply within the meat. Consuming harmful bacteria could make you fall sick.

Colorado State University explains that temperatures above 40 degrees Fahrenheit and below 140 degrees Fahrenheit are the danger zone where bacteria multiply rapidly. Climate change could be worsening the problem; a December 2014 study published in the journal Foodborne Pathogens and Disease notes that climate change and the higher temperatures it brings may increase salmonella infections in the U.S.

Salmonella, a type of bacteria that is sometimes found in pork, among other foods, can cause acute infections with symptoms like fever, nausea, vomiting, diarrhea and abdominal pain, notes a March 2019 study published in the journal Diseases.

Instead of trying to heat up a precooked ham in a Crock-Pot, it is recommended that you reheat the meat on the stove, or in the microwave or convection oven, until the meat crosses 165 degrees Fahrenheit. You can then place the ham in the Crock-Pot to keep it warm until you're ready to serve it. The Crock-Pot's temperature should be above 140 degrees Fahrenheit.

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Note that putting uncooked ham in a slow cooker is a different matter altogether if you're planning to cook the ham from scratch. In that case, the USDA recommends ensuring that the meat is completely thawed and then tossing the uncooked ham into the slow cooker along with some liquid like broth or water. The uncooked ham in the slow cooker should cross the threshold of 165 degrees Fahrenheit to be safe for consumption.

Warming a Precooked Ham in a Crock-Pot

Follow these steps to warm a precooked ham in a Crock-Pot, provided that the ham fits in your Crock-Pot:

  • Heat up the ham: Heat the ham either on the stove or in the microwave or convection oven. Use a meat thermometer to ensure that the thickest and innermost parts of the meat are hotter than 165 degrees Fahrenheit.
  • Place the ham in the Crock-Pot: Place the ham in the Crock-Pot, along with the amount of liquid recommended by the manufacturer. Set the temperature above 140 degrees Fahrenheit. According to the University of Minnesota, if the Crock-Pot has a warm setting, you can use that to keep the ham warm.
  • Serve the ham: Serve the ham when you're ready to eat. A 2-ounce serving of uncured ham offers 80.1 calories, 12 grams of protein, 3 grams of fat, 39.8 milligrams of cholesterol and 600 milligrams of sodium.
  • Refrigerate leftovers: The University of Minnesota cautions against leaving cooked food in the Crock-Pot to cool down; it is recommended that you either eat it immediately or refrigerate it.

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