Cooking a ham is often associated with high-stress holiday dinners, cramped oven space, and the constant fear of serving a dried-out centerpiece. However, there is a secret weapon in your kitchen that eliminates all those worries: the slow cooker. Learning how to cook a ham in the crockpot is a game-changer for both novice cooks and seasoned hosts. By utilizing the low, steady heat of a slow cooker, you ensure the meat remains incredibly tender and juicy while freeing up your oven for side dishes like roasted vegetables or fresh rolls.
Why the Slow Cooker is the Best Method for Ham
Most hams you buy at the grocery store are already fully cooked or hickory-smoked. When you “cook” a ham, you are essentially reheating it and infusing it with flavor. The dry environment of a traditional oven can quickly sap the moisture from the meat, leading to a tough texture. In contrast, a crockpot creates a sealed, humid environment. As the ham heats, the moisture stays trapped inside the vessel, self-basting the meat for hours.
Beyond the moisture factor, the convenience is unmatched. You can set the ham in the morning or early afternoon and walk away. There is no need to baste every thirty minutes or worry about the exterior burning before the center is warm. It is the ultimate “set it and forget it” solution for a large-scale protein.
Choosing the Right Ham for Your Crockpot
Before you start, you need to ensure your ham will actually fit. Most standard oval-shaped 6-quart to 8-quart slow cookers can accommodate a 7-pound to 10-pound ham.
Bone-In vs. Boneless
A bone-in ham is generally preferred for flavor. The bone acts as a conductor of heat, helping the meat cook evenly from the inside out, and it adds a depth of savoriness that boneless versions often lack. Plus, you get a ham bone at the end to use for soups or beans. However, if your slow cooker is on the smaller side, a boneless ham is much easier to trim and fit into the pot.
Spiral Sliced vs. Whole
Spiral-sliced hams are incredibly convenient because they are pre-cut into thin, uniform slices. This allows your glaze to seep deep between the layers, flavoring every bite. The downside is that they are more prone to drying out if cooked too long. A whole (unsliced) ham takes a bit longer to heat through but is much more forgiving and stays exceptionally juicy.
Preparing Your Ham for the Slow Cooker
Success starts with a little bit of prep work. If you find that your ham is just an inch too tall for the lid to close, don’t panic. You can trim a small slice off the bottom to level it out, or you can create a “tent” using heavy-duty aluminum foil. Simply wrap the foil tightly around the rim of the crockpot and over the top of the ham to create a seal, ensuring no steam escapes.
If your ham comes with a plastic “button” on the bone, make sure to remove it. You should also rinse off any excess brine from the packaging and pat the meat dry with paper towels before applying your rub or glaze.
Creating the Perfect Glaze
A ham is only as good as its glaze. Since the slow cooker doesn’t provide the same caramelization as a high-heat oven, the ingredients in your glaze need to do the heavy lifting. A classic base usually involves a combination of sweetness and acidity.
Common sweeteners include:
- Brown sugar
- Honey
- Maple syrup
- Pineapple juice
- Apricot preserves
To balance the sugar, add acidic or savory elements like:
- Dijon mustard
- Apple cider vinegar
- Ground cloves
- Garlic powder
- Bourbon or dark rum
A popular method is to rub brown sugar directly onto the ham first, then pour a liquid mixture of pineapple juice and mustard over the top. The sugar will dissolve into a thick, syrupy glaze as the ham cooks.
Step-by-Step Cooking Instructions
Follow these steps for a foolproof meal.
- Place the ham in the crockpot. For a bone-in ham, place the flat, cut side down. This helps the meat stay moist and ensures the thickest part of the ham is closer to the heating element.
- Apply your glaze. Pour your chosen liquid and sugar mixture over the top, making sure to get some between the slices if using a spiral-cut ham.
- Set the temperature. Always cook ham on the Low setting. High heat can cause the sugars in the glaze to burn and the outer layers of the meat to become rubbery.
- Cooking time. For a fully cooked ham, you generally need 15 to 20 minutes per pound. A 7-pound ham usually takes about 3 to 4 hours on Low.
- Check the internal temperature. The goal is to reach an internal temperature of 140 degrees Fahrenheit. Use a meat thermometer inserted into the thickest part of the ham, making sure not to touch the bone.
Tips for the Best Flavor and Texture
To take your ham from good to gourmet, consider these professional tips.
- Avoid adding too much extra liquid. The ham will release its own juices as it heats. Adding more than a half-cup of liquid can result in the ham being boiled rather than slow-roasted, which affects the texture.
- If you want that classic “crusty” exterior, you can remove the ham from the crockpot once it is finished and place it on a baking sheet. Brush on a bit more glaze and broil it in the oven for 3 to 5 minutes until the sugar bubbles and browns. This gives you the best of both worlds: slow-cooker tenderness and oven-roasted texture.
Serving and Leftover Ideas
Once the ham reaches 140 degrees Fahrenheit, remove it from the crockpot and let it rest on a carving board for at least 15 minutes. This allows the juices to redistribute so they don’t run out the moment you slice into it.
The liquid left behind in the crockpot is liquid gold. Strain it and simmer it in a saucepan on the stove to reduce it into a thick gravy or sauce to serve alongside the meat.
Leftover ham is arguably better than the main event. You can use it for:
- Ham and cheese sliders with poppy seed butter.
- Diced ham in a morning frittata or omelet.
- Split pea or navy bean soup using the reserved bone.
- Ham salad sandwiches with mayo and relish.
Common Mistakes to Avoid
The most common mistake is overcooking. Because the ham is already cooked, you are only aiming to get it hot throughout. If you leave it in the crockpot for 8 or 10 hours, even on low, a spiral-cut ham will likely fall apart into shreds. Always start checking the temperature at the 3-hour mark.
Another mistake is lifting the lid. Every time you open the crockpot to “peek,” you release the accumulated steam and heat, which can add 15 to 20 minutes to the total cooking time and dry out the surface of the meat. Trust the process and keep the lid closed.
FAQs
Can I put a frozen ham in the crockpot?
It is not recommended to cook a frozen ham in a slow cooker. Because the crockpot heats up slowly, a large piece of frozen meat may spend too much time in the “danger zone” (between 40 degrees Fahrenheit and 140 degrees Fahrenheit) where bacteria can grow rapidly. Always thaw your ham completely in the refrigerator for 24 to 48 hours before cooking.
How do I keep the ham from getting too salty?
Store-bought hams are naturally high in sodium. To balance this, focus on a glaze with plenty of sweetness, like honey or maple syrup, which counteracts the saltiness. You can also rinse the ham under cold water before putting it in the crockpot to remove excess surface brine.
What if my ham is too big for the lid to close?
If the ham sticks out of the top, use a double layer of heavy-duty aluminum foil to create a dome over the ham. Tuck the edges of the foil tightly around the rim of the slow cooker to trap the steam. This effectively extends the height of your crockpot and ensures the top of the ham cooks at the same rate as the bottom.
Do I need to add water to the bottom of the crockpot?
You do not need to add water. Adding water can dilute the flavor of the ham and the glaze. Most hams will release enough natural juices to create a moist environment. If you are worried about burning, you can add a small amount (about 1/4 cup) of apple juice or pineapple juice.
How long does leftover slow cooker ham last?
Leftover ham can be stored in an airtight container in the refrigerator for 3 to 5 days. If you can’t finish it by then, ham freezes beautifully. Wrap it tightly in plastic wrap and then foil, or use a vacuum sealer, and it will stay fresh in the freezer for up to 2 months.