Hosting a holiday dinner or a special family gathering often comes with a significant amount of stress, particularly when it involves timing the main course. The centerpiece of these meals is frequently a beautiful, glazed ham. However, tying up your oven for hours can be a logistical nightmare, especially when you have side dishes like roasted vegetables, rolls, or casseroles that also need heat. This is where the slow cooker becomes your best friend. Learning how to cook a precooked ham in crockpot settings is a game-changer for any home cook looking to achieve a succulent, flavorful result without the oven-induced anxiety.
Since most hams sold in grocery stores are already fully cooked or smoked, your primary goal isn’t to “cook” the meat in the traditional sense of reaching a safe internal temperature from raw. Instead, your mission is to reheat the ham slowly and gently so that it remains moist while allowing any added glazes to penetrate the meat and caramelize beautifully.
Selecting the Best Ham for Your Slow Cooker
Before you even turn on your appliance, you need to ensure you have the right piece of meat. Not all hams are created equal, and size is the most critical factor when using a crockpot.
Bone-In vs. Boneless
For the best flavor and moisture retention, a bone-in ham is generally preferred. The bone acts as a conductor for heat and adds a depth of flavor that boneless varieties often lack. However, boneless hams are much easier to slice and are often more compact, making them a safer bet if you have a smaller slow cooker.
Spiral Cut vs. Whole
Spiral-cut hams are incredibly convenient because they are pre-sliced all the way to the bone. This allows your glaze to seep down into every layer of the meat. The downside is that spiral hams can dry out more easily if overcooked. If you choose a spiral-cut ham, you must be more diligent about your cooking time and liquid levels.
Fitting the Ham in the Pot
Standard oval slow cookers usually range from 6 to 8 quarts. A 6-quart crockpot can typically accommodate a 6 to 8 pound ham. If your ham is a bit too tall and prevents the lid from closing tightly, don’t panic. You can create a “tent” using heavy-duty aluminum foil to seal the top, ensuring the steam and heat stay trapped inside.
Prepping Your Ham for the Slow Cooker
Preparation is minimal, but a few key steps will ensure your ham doesn’t end up bland or dry. If your ham comes with a plastic disk over the bone, make sure to remove and discard it.
Place the ham in the crockpot with the flat side or the cut side facing down. This position helps the meat retain its juices and allows it to sit more stably in the pot. If you are using a spiral ham, try to keep the slices pressed together so the interior doesn’t get exposed to too much direct heat too quickly.
While the ham is precooked, you still need a liquid base to create steam. Without it, the bottom of the ham might scorch, and the meat will lose its tenderness. Common liquid bases include:
- Apple cider or apple juice
- Pineapple juice
- Ginger ale or cola
- Water with a splash of apple cider vinegar
Crafting the Perfect Slow Cooker Glaze
The glaze is where you can truly customize the flavor profile of your meal. Since you are slow-cooking, the sugars in the glaze have plenty of time to meld with the saltiness of the pork.
The Sweet and Savory Classic
A traditional glaze usually involves a base of brown sugar or honey. Mixing one cup of brown sugar with a half-cup of Dijon mustard and a splash of bourbon or apple cider creates a thick, tacky glaze that clings to the meat.
The Tropical Twist
If you enjoy the classic pairing of ham and pineapple, use pineapple juice as your base liquid. Top the ham with crushed pineapple and a mixture of brown sugar and ground cloves. The acidity in the pineapple helps tenderize the outer layers of the ham.
Applying the Glaze
You have two options for glazing. You can apply the glaze at the very beginning of the cooking process, allowing it to soak in for hours. Alternatively, you can cook the ham with just its base liquid and apply the glaze during the final 30 to 45 minutes of cooking for a fresher, brighter flavor.
Cooking Times and Temperatures
Precision is key when reheating precooked meat. You want the internal temperature to reach 140 degrees Fahrenheit, which is the standard for serving precooked ham warm.
Low and Slow
The “Low” setting on your slow cooker is almost always the best choice for ham. Cooking on “High” risks toughening the proteins and drying out the edges before the center is warm.
For a 6 to 8 pound ham, expect it to take between 4 to 6 hours on Low. If you are in a rush and must use the High setting, check the internal temperature after 2 to 3 hours.
Monitoring for Doneness
The best tool in your kitchen for this task is a meat thermometer. Insert it into the thickest part of the ham, making sure not to touch the bone, as the bone will give an inaccurately high reading. Once the thermometer reads 140 degrees Fahrenheit, your ham is ready.
Tips for Succulent Results
To elevate your slow-cooked ham from good to great, consider these professional tips:
- Avoid Lifting the Lid Every time you peek, you release a significant amount of heat and steam, which can add 15 to 20 minutes to your total cooking time. Only open the lid toward the end of the process to check the temperature or apply a final layer of glaze.
- The Foil Trick If you are worried about the top of the ham drying out, especially if it’s poking out near the lid, wrap the entire ham in foil before placing it in the slow cooker. This creates a self-basting environment.
- Resting the Meat Just like a steak or a roast, ham needs to rest. Once you remove it from the crockpot, transfer it to a cutting board and tent it loosely with foil for 15 to 20 minutes. This allows the juices to redistribute throughout the meat, ensuring every slice is moist.
Serving and Leftover Ideas
Once your ham has rested, it’s time to carve. If you used a spiral ham, the work is mostly done for you. If it’s a whole ham, slice against the grain for the most tender bites.
Don’t discard the liquid left in the bottom of the crockpot! You can strain it and simmer it in a saucepan over medium-high heat to reduce it into a thick, flavorful syrup to drizzle over the meat.
The beauty of a large ham is the leftovers. Beyond the standard sandwich, leftover slow-cooked ham is excellent in:
- Split pea or navy bean soup (save that ham bone!)
- Breakfast hashes with potatoes and onions
- Diced into a cheesy crustless quiche
- Added to a creamy pasta carbonara
Common Mistakes to Avoid
The most common mistake is overcooking. Because the ham is already cooked, many people treat it like a pot roast and leave it in for 8 or 10 hours. This will result in ham that is “shreddy” and dry rather than firm and juicy.
Another mistake is neglecting the liquid. Even a half-cup of liquid makes a massive difference in the humidity of the cooking environment. If you want a crispy exterior, you can always pop the ham under the oven broiler for 3 to 5 minutes after it comes out of the slow cooker, but during the slow-cooking phase, moisture is your best friend.
FAQs
Can I put a frozen ham in the crockpot?
It is not recommended to put a completely frozen ham in a slow cooker. Because the slow cooker takes a long time to reach a safe temperature, the meat may sit in the “danger zone” (between 40 degrees Fahrenheit and 140 degrees Fahrenheit) for too long, allowing bacteria to grow. Always thaw your ham in the refrigerator for 24 to 48 hours before cooking.
How much ham do I need per person?
A good rule of thumb for a bone-in ham is about 3/4 pound to 1 pound per person. This accounts for the weight of the bone and ensures you have enough for seconds or leftovers. For a boneless ham, a 1/2 pound per person is usually sufficient.
Do I need to add water if the ham is vacuum-sealed in juice?
Even if the ham has some juices in the packaging, it is still a good idea to add at least a half-cup of supplemental liquid like apple juice or broth. This ensures that the bottom of the crockpot remains moist throughout the entire multi-hour cooking process.
My ham is too big for the lid to close. What should I do?
If the ham sticks out over the rim of the slow cooker, you can create a tight seal using a large piece of aluminum foil. Press the foil around the edges of the crockpot to keep the steam inside. You can also place the lid on top of the foil to help weigh it down, though it won’t sit flush.
Can I cook the ham on the High setting to save time?
You can, but it is riskier. The high heat can cause the sugars in your glaze to burn and the outer layers of the ham to become tough before the bone-in center is warm. If you must use High, reduce the cooking time to approximately 3 hours and check the temperature frequently starting at the 2-hour mark.