The simplest way to cook a butt portion ham perfectly every time is to heat it gently to an internal temperature of 140°F (60°C), using low, steady oven heat and adequate moisture to prevent drying.
Because most butt portion hams sold in stores are fully cooked and cured, the goal is not to cook the meat from raw but to warm it evenly, preserve juiciness, and develop flavor without overcooking.
What a Butt Portion Ham Actually Is

A butt portion ham comes from the upper part of the pig’s hind leg, closer to the hip. It is leaner than the shank portion and usually contains part of the hip bone, which contributes flavor during reheating.
In U.S. grocery stores, more than 90 percent of whole and partial hams sold are already fully cooked, according to USDA retail data, which means improper reheating is the main reason people end up with dry, tough slices.
The butt portion is especially sensitive to high heat because it has less fat marbling than the shank.
From a practical standpoint, butt portion hams are popular because they are easier to carve into uniform slices and fit standard home ovens more comfortably.
They typically weigh between 5 and 9 pounds, making them suitable for small to medium gatherings without leftovers dominating the fridge for a week.
Fully Cooked vs. Partially Cooked: Why the Label Matters
View this post on Instagram
Before turning on the oven, the label determines everything. A fully cooked ham only needs reheating. A partially cooked or “cook before eating” ham must reach a higher internal temperature to be food safe.
The USDA sets clear standards for ham safety, which are summarized below.
Ham Type
Required Internal Temperature
Purpose
Fully cooked, vacuum-sealed
140°F / 60°C
Reheating
Fully cooked, repackaged
165°F / 74°C
Reheating for safety
Partially cooked or raw
160°F / 71°C
Full cooking
Most butt portion hams sold in U.S. supermarkets are fully cooked and vacuum sealed. If yours is not, the cooking time and moisture strategy must change significantly.
Why Low Heat Is Non-Negotiable

Ham muscle fibers tighten quickly when exposed to high heat. Because curing removes some moisture during processing, reheating too fast causes remaining moisture to escape.
Industry test kitchens consistently recommend oven temperatures between 275°F and 325°F for reheating ham. Anything hotter shortens the cooking time but dramatically increases moisture loss.
At 325°F, a butt portion ham warms evenly without drying, while still allowing the surface to develop flavor if glazed. This temperature also aligns with standard commercial food service reheating practices, which prioritize moisture retention over speed.
Step-by-Step Method for a Perfect Butt Portion Ham
A butt portion ham does not need complexity. It needs control.
Preheat the oven to 325°F. Remove the ham from its packaging and place it cut-side down in a heavy roasting pan. This positioning reduces exposed surface area and protects the learner’s sliced face from direct heat.
Add moisture to the pan. About one cup of liquid is sufficient. Water works, but low-sodium chicken broth, apple juice, or a mixture of both adds subtle flavor without overpowering the ham’s cured profile. The liquid creates steam, which stabilizes the oven environment around the meat.
Cover the ham tightly with foil. This step is essential. Without foil, surface dehydration begins within minutes.
Reheat until the internal temperature reaches 140°F, measured at the thickest part without touching bone. Use a probe thermometer if possible. Visual cues are unreliable with cured meat.
The table below shows realistic reheating times based on weight, assuming a fully cooked ham at refrigerator temperature.
Ham Weight
Estimated Reheating Time at 325°F
5–6 lb
1 hour 20 minutes
7–8 lb
1 hour 45 minutes
9 lb
2 hours 10 minutes
These times are averages. Internal temperature is the only accurate indicator of doneness.
When and How to Glaze Without Ruining the Meat

Glazing is optional, but if done incorrectly, it is one of the most common causes of dry ham. Sugar burns quickly above 350°F and draws moisture from the surface.
If you glaze, wait until the last 20 to 30 minutes of reheating. Remove the foil, apply the glaze, and return the ham to the oven uncovered.
Keep the temperature at 325°F. Do not increase the heat to “set” the glaze. The glaze will thicken naturally as moisture evaporates.
A balanced glaze includes sweetness, acidity, and salt. Brown sugar with mustard and a small amount of vinegar or citrus juice works because it counteracts the ham’s saltiness rather than amplifying it.
Bone-In vs. Boneless Butt Portion Ham
Bone-in butt portion hams retain moisture slightly better due to slower heat transfer around the bone. Boneless hams heat faster but are more prone to drying if reheated aggressively.
Type
Moisture Retention
Carving Ease
Reheating Risk
Bone-in butt portion
Higher
Moderate
Lower
Boneless butt portion
Moderate
Easy
Higher
If reheating boneless ham, extra attention to foil sealing and pan moisture is critical.
Resting and Carving: The Overlooked Step
Once the ham reaches temperature, remove it from the oven and let it rest for at least 15 minutes, still loosely covered. This allows redistributed moisture to stabilize within the muscle fibers.
Carving immediately causes juices to escape onto the cutting board instead of staying in the meat.
Slice across the grain in even portions. Butt portion ham grain direction is usually visible on the cut face. Thin slices retain heat and moisture better than thick slabs.
Storage and Reheating Leftovers Safely

Cooked ham should be refrigerated within two hours of serving. Properly stored, it remains safe for three to four days.
Reheat slices gently, ideally covered, and with a small amount of added moisture. Microwave reheating without coverage is the fastest way to turn good ham into dry protein.
According to USDA cold storage guidelines, frozen cooked ham maintains quality for up to two months when tightly wrapped, though texture degradation begins earlier.
Why This Method Works Consistently
@taste.com.au This might be the easiest glazed ham ever! Recipe in our bio or Google “Taste 3-ingredient Cola-glazed ham”. Brought to you by @Coles #christmas #christmascountdown #glazedham #ham #christmasfood ♬ Swing jazz cover with live music jingle bell.Christmas Songs cover. – Yoshinori Tanaka
This approach aligns with how cured meats are handled in institutional kitchens and meat processing test labs. Low heat, controlled moisture, accurate temperature monitoring, and minimal handling produce repeatable results.
The butt portion ham does not need constant basting, high heat, or long exposure. It needs patience and restraint. A simple horseradish sauce, kept cold and added at the table, complements that restraint without interfering with moisture or heat.
When treated as a reheating process rather than a cooking project, the butt portion n ham delivers what it is supposed to deliver: clean slices, balanced saltiness, and meat that stays moist from center to edge without effort or guesswork.
I’m Leo McIntyre, and my love for cooking was born in my grandmother’s kitchen, where I discovered the magic of traditional Southern recipes. Inspired by her passion and the flavors of my childhood, I started SouthernParm to share these treasured family dishes and keep the rich culinary traditions of the South alive for everyone to enjoy.
