Cooked ham can become rubbery if reheated incorrectly, but the oven method with proper wrapping keeps it tender and juicy. If you want to know how to reheat a cooked ham in the oven without drying it out, the key is low heat, gentle moisture, and a good thermometer.
This guide walks you through temps, times, wrapping tricks, and glazes. You will also learn how to tell when the ham is safely hot all the way through.
Why The Oven Method Works Best
The oven gives you steady, even heat. That matters for a large piece of meat like a whole or half ham.
A microwave heats unevenly and can toughen the edges. A slow cooker works, but it steams the ham and softens the crust. The oven balances both: moist inside, lightly browned outside.
You just need to protect the surface. Ham is already cooked, so you are only reheating it, not cooking it from raw. Overheating is the number one mistake.
How To Reheat A Cooked Ham In The Oven
Follow these steps for a whole, half, or spiral sliced ham. The method is the same, only the time changes.
Step 1: Bring The Ham To Room Temperature
Take the ham out of the fridge 30 to 60 minutes before reheating. Cold meat takes longer to heat through, which dries out the outside.
If you are short on time, skip this. Just add 10 to 15 minutes to the total bake time.
Step 2: Preheat The Oven To 325°F (163°C)
Low and slow is the rule. Higher heat (350°F or more) tightens the muscle fibers and makes the ham rubbery.
Set a rack in the middle of the oven. Let it fully preheat before the ham goes in.
Step 3: Prepare The Pan And Wrapping
This is the most important part. You need to trap steam around the ham.
- Place the ham cut-side down in a roasting pan.
- Add 1/2 cup of water, broth, or apple juice to the bottom of the pan.
- Cover the pan tightly with heavy-duty foil. Or use a lid that seals well.
- For spiral sliced ham, wrap the whole thing in foil first, then set it in the pan.
The liquid creates steam. The foil keeps that steam in. Together they stop the ham from drying out.
Step 4: Reheat Times By Weight
Use these as a guide. Always check the internal temperature, not just the clock.
- Whole ham (10 to 15 lbs): 10 to 12 minutes per pound
- Half ham (5 to 7 lbs): 12 to 15 minutes per pound
- Spiral sliced ham (7 to 10 lbs): 10 to 12 minutes per pound
- Small ham piece (2 to 4 lbs): 15 to 18 minutes per pound
A 7-pound half ham usually needs about 1 hour 30 minutes. A 10-pound whole ham runs closer to 1 hour 45 minutes.
Step 5: Check The Internal Temperature
Insert an instant-read thermometer into the thickest part. Avoid touching bone or the pan bottom.
You want 140°F (60°C). That is the safe serving temperature for fully cooked ham. If it reads lower, put it back in and check every 10 minutes.
Do not push past 150°F. Above that, the texture turns dry and stringy.
Step 6: Add A Glaze (Optional)
Glaze adds flavor and a nice finish. But timing matters.
- Reheat the ham covered for most of the time.
- In the last 15 to 20 minutes, uncover it and brush on the glaze.
- Return it to the oven uncovered so the glaze sets.
Good glaze options: brown sugar and mustard, honey and orange juice, or maple syrup with a pinch of cloves. If your glaze has a lot of sugar, keep the heat at 325°F so it does not burn.
Step 7: Rest Before Slicing
Take the ham out of the oven and leave it covered. Let it rest 10 to 15 minutes.
This lets the juices settle back into the meat. If you slice right away, the moisture runs out onto the cutting board.
Common Mistakes To Avoid
- Reheating uncovered. The surface dries out fast.
- Using high heat to save time. It backfires every time.
- Skipping the liquid in the pan. Steam needs a source.
- Glazing too early. Sugar burns before the ham is hot.
- Trusting the timer over a thermometer. Ovens vary a lot.
How To Keep Leftover Ham Moist
Store leftovers in a shallow container with a splash of the pan juices or broth. Seal it tight and refrigerate within 2 hours.
Eat leftover ham within 3 to 4 days. When you reheat a single slice, cover it with a damp paper towel and warm it at 50 percent power in the microwave for 30 to 45 seconds. For larger amounts, put them back in a 325°F oven, covered, until they hit 140°F.
Final Tips For A Tender Result
Buy the right size. A ham that fits your pan with room to spare heats more evenly.
Keep a note of your times. Every oven runs a little hot or cold, so your second attempt will be more accurate than the first.
And always let the thermometer be your guide. If the ham reads 140°F, it is done, no matter what the recipe says.
With low heat, tight foil, and a little liquid, your reheated ham will taste almost as good as the day it was baked. Slice it thin, pile it on rolls, or serve it as the main dish with your favorite sides.