How Long to Cook a 1.5-Pound Meatloaf

A 1½-pound meatloaf usually takes about 60 to 70 minutes in a 350°F (177°C) oven, but a thermometer—not the clock—is the reliable way to know it is done. This classic American-style loaf combines ground beef, breadcrumbs, milk, egg, and a simple ketchup glaze for tender slices that are easy to serve with familiar sides. Meatloaf recipes vary by household, and this version keeps the seasoning straightforward so the beef stays at the center.

Ingredients

1½ pounds (680 g) ground beef, preferably 85% lean
¾ cup (45 g) plain breadcrumbs
½ cup (120 ml) whole or 2% milk
1 large egg (about 50 g without the shell)
½ cup (75 g) finely minced yellow onion
2 garlic cloves (6 g), finely minced
1 tablespoon (15 ml) Worcestershire sauce
1 teaspoon (6 g) fine salt
½ teaspoon (1 g) ground black pepper
1 teaspoon (1 g) dried thyme
⅓ cup (80 g) ketchup, for the glaze
1 tablespoon (12 g) packed brown sugar
1 teaspoon (5 ml) apple cider vinegar

Instructions

Heat the oven to 350°F (177°C). Set a rack in the center. Line a rimmed baking sheet with foil or parchment for easier cleanup, or lightly grease a 9-by-5-inch (23-by-13-cm) loaf pan. A baking sheet lets fat drain away and gives the loaf more browned edges; a loaf pan makes a neater shape but may hold more rendered liquid.
In a medium bowl, stir the breadcrumbs and milk together and let them stand for 5 minutes. This brief soak lets the crumbs absorb moisture before they go into the meat, helping the finished slices hold together without becoming dense. While they stand, mince the onion and garlic and measure the seasonings and Worcestershire sauce.
Add the egg, onion, garlic, Worcestershire sauce, salt, pepper, and thyme to the soaked crumbs and mix until combined. Add the ground beef. Use clean hands or a fork to fold everything together just until no large streaks of egg or breadcrumbs remain. Avoid squeezing or kneading the mixture for a long time; overworking ground meat can make the loaf firm and compact.
Transfer the mixture to the prepared pan or baking sheet. Shape it into an even loaf about 9 inches (23 cm) long and 4 to 5 inches (10 to 13 cm) wide, with a gently rounded top. Keep the thickness fairly uniform so the center and ends finish cooking at roughly the same time. If using a loaf pan, leave a little room at the top rather than packing the mixture tightly.
Stir the ketchup, brown sugar, and cider vinegar together in a small bowl. Brush about half the glaze over the top and sides of the loaf. Bake for 40 minutes, then carefully brush on the remaining glaze. Continue baking for about 20 to 30 minutes, checking the temperature near the end. Most 1½-pound loaves take 60 to 70 minutes in total, though shape, pan, and oven differences can shift the timing.
Insert an instant-read food thermometer into the thickest part of the center, keeping the tip away from the pan. The meatloaf is done when it reaches 160°F (71°C); this is the USDA FSIS safe minimum internal temperature for ground beef. If it is below that temperature, return it to the oven and check again after 5 to 10 minutes. Do not rely on a browned top or clear juices alone to establish doneness.
Move the cooked loaf to a cutting board and let it rest for 10 minutes before slicing. Resting gives the juices time to settle and makes the slices less likely to crumble. Use a sharp knife and wipe the blade between cuts for cleaner portions. If the loaf was baked in a pan with pooled fat, lift it out carefully with a wide spatula before resting.

Tips

Choose beef with some fat. Ground beef around 85% lean gives the loaf enough fat for a tender texture without leaving as much grease as a fattier blend. Very lean beef can turn dry, especially if it is cooked well beyond 160°F (71°C). If your package is leaner, avoid extending the oven time once the center reaches the safe temperature.
Make a substitution without changing the method. Plain panko or crushed unsalted crackers can replace the breadcrumbs; use the same volume, though panko may give a slightly lighter texture. For a dairy-free loaf, use unsweetened plain plant milk or water in place of dairy milk. The result may be a little less rich, but the liquid still softens the crumbs.
Do not compress the mixture. A loose, gently shaped loaf bakes more evenly and stays softer than one packed firmly into a pan. Finely mince the onion so it softens during baking; large chunks can leave gaps and make slices break apart. If you are concerned about seasoning, cook a small spoonful of the mixture in a skillet until done, taste it, and adjust the uncooked mixture before shaping.
Use the thermometer in the center. The ends can be hotter than the middle, so a reading near an edge can give a false sense that the whole loaf is done. If the top is getting dark before the center reaches 160°F (71°C), loosely tent it with foil while it finishes. Check the oven temperature if your loaf repeatedly takes much longer than the expected range.

Serving Suggestions

Serve the meatloaf after its 10-minute rest, cut into roughly ¾-inch (2-cm) slices. Mashed potatoes, roasted potatoes, or buttered egg noodles make filling accompaniments, while green beans, peas, roasted carrots, or a crisp green salad add a fresh contrast to the savory glaze. Spoon any glaze or juices left in the pan over the slices, but avoid pouring off a large amount of hot fat.

For a simple plate, pair one slice with a vegetable and a starch; for sandwiches, let the slices cool slightly so they stay intact on bread. Extra ketchup or mustard can be served at the table. If you are serving several people, slice only what you need at first and keep the rest of the loaf whole until seconds are wanted, which helps it retain moisture.

Variations

For a more savory glaze, replace the brown sugar with 1 tablespoon (15 ml) of Worcestershire sauce or add 1 teaspoon (5 ml) of Dijon mustard to the ketchup mixture. The glaze will be less sweet and a little sharper. You can also add ½ cup (50 g) finely grated Parmesan to the meat mixture for a saltier, more savory loaf; reduce the added salt slightly if the cheese is especially salty.

To change the herbs, swap the dried thyme for 1 teaspoon (1 g) Italian seasoning or ½ teaspoon (0.5 g) dried oregano. For extra vegetable flavor, add up to ½ cup (60 g) finely grated carrot, squeezed dry if it is watery. It adds moisture and a mild sweetness, so keep the loaf’s shape even and use the thermometer to confirm doneness.

Ground turkey can replace the beef, but it has a leaner texture and a milder flavor; use a thermometer and cook poultry to 165°F (74°C), the USDA FSIS safe minimum. This is a different timing target from the beef version, so begin checking before the usual estimated finish and continue until the center reaches that temperature. Do not use the beef temperature for a turkey loaf.

Storage and Reheating

Refrigerate leftover meatloaf within 2 hours of cooking. Store slices or the remaining loaf in a covered airtight container for 3 to 4 days. Keeping the loaf whole until serving leftovers can help it stay moist, but slice it before storing if that makes it easier to cool and portion promptly. Discard meatloaf that has been left at room temperature longer than 2 hours.

For longer storage, freeze tightly wrapped individual slices or portions in a freezer-safe container. For best texture, use frozen portions within about 2 to 3 months; thaw them in the refrigerator rather than on the counter. Reheat refrigerated or thawed meatloaf in a covered oven-safe dish at 325°F (163°C), or in the microwave in short intervals, until the center reaches 165°F (74°C). Add a spoonful of water or broth before covering if the slices look dry. Check the temperature with a food thermometer, especially when reheating a thick piece.

Frequently Asked Questions

Is 350°F the best oven temperature for a 1½-pound meatloaf?
Yes. At 350°F (177°C), a loaf of this size generally cooks evenly and has time to brown without the outside racing ahead of the center. A hotter oven can cook the edges more quickly, while a lower oven usually extends the cooking time. Whatever temperature you use, the safe endpoint for this ground-beef recipe is 160°F (71°C) in the center.

How long should I cook it if I use a loaf pan?
Start checking at about 60 minutes, but allow roughly 60 to 70 minutes overall. A loaf pan can hold rendered fat and may change how quickly the sides brown, so the exact time can differ from a free-form loaf on a baking sheet. Measure the center with a thermometer and continue baking in short increments if it has not reached 160°F (71°C).

Can I prepare the meatloaf ahead of time?
You can mix and shape it, cover it, and refrigerate it for up to 24 hours before baking. Keep it refrigerated rather than leaving it on the counter, and apply the glaze just before it goes into the oven. A cold loaf may need more time than the estimate, so begin checking the center near the usual finish and bake until it reaches 160°F (71°C).

Why does my meatloaf fall apart when I slice it?
It may have too little binder, too much liquid, large pieces of onion, or not enough resting time. Measure the breadcrumbs and milk, mince the onion finely, and allow the baked loaf to rest for 10 minutes before cutting. Slices cut while the loaf is very hot are more likely to crumble; a sharp knife also helps.

Can I tell that meatloaf is done by its color?
No. A browned crust and a cooked-looking surface do not confirm that the center has reached a safe temperature, and ground beef can remain pink even when fully cooked. Use an instant-read thermometer in the thickest part and cook this beef loaf to 160°F (71°C), the USDA FSIS safe minimum. Check more than one central spot if the shape is uneven.

Can I bake two meatloaves at once?
Yes, if they fit with space between them so hot air can circulate. Two loaves do not automatically require twice as long, but a crowded oven or two cold pans can slow cooking. Rotate the pans if your oven has hot spots, begin checking around the usual 60-minute mark, and confirm that each loaf reaches 160°F (71°C) in its own center.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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