How to Make Meatloaf: Thermal Considerations (2024)

In the pantheon of iconic restaurant dishes there is a quiet, humble spot in the back corner that is reserved for the great blue plates of the American Diner. And in the center of that shrine, there glows one of the greats of that collection: meatloaf.

Whether served fresh, maybe with mashed potatoes and some nice rich gravy, or reheated the next day on a sandwich, meatloaf is hearty, comforting treat. Of course you don’t want a greasy loaf, and you don’t want one that is dry and chalky. Read on for the thermal tips for a classic, moist, meaty, simply amazing meatloaf.

What makes a good meatloaf?

Meatloaf needs a few things to be its best self.

• Meatloaf should be moist, not dry. But it should also not be soggy and greasy.
• Meatloaf should be flavorful, not bland.
• Meatloaf should hold together in slices, not be so crumbly that it can’t be served easily or used in a sandwich.
• Meatloaf should not be too dense. It should be light enough to enjoy and maybe have seconds!
• Meatloaf should have a delicious crusty outside.

Let’s look at these points individually to see what se can do to make the best meatloaf.

Moist (not soggy, not dry) meatloaf

To get a meatloaf that is moist (not dry) we need two things: binders and temperature control.

When making meatloaf or meatballs, it’s standard practice to add some kind of breadcrumb/cracker meal/soaked bread as well as eggs and, often, milk. The milk and eggs are obviously wet ingredients and will help to keep things moist, but beyond their native wetness, they are also full of protein. When the proteins in the milk and eggs cook, they form a network that can help to retain moisture in the loaf.

Meanwhile, the bread-like ingredients create a sponge inside the meatloaf that will retain moisture. The crumbs soak up not only the moisture from the eggs and milk, but also from the meat as it cooks and expels its own water. The breadcrumbs soak it up so that the loaf doesn’t dry out.

So much for the binders, but they are only half the battle. No meatloaf, no matter how well bound or how much milk you add, can withstand overcooking. Because it is made of ground meat, we must cook all meatloaf to 160°F (71°C). But because we don’t want to dry it out, we don’t want to go beyond that temperature at all, if we can help it. Using a leave-in probe thermometer like the ChefAlarm^® to monitor the temperature while cooking can help guarantee success. Because meatloaf is cooked in a moderately-hot oven—350°F (171°C)— there will be some carryover cooking, so pull it from heat at 155°F (68°C). That critical temperature will give you a meatloaf that is both safe and as juicy as possible.

(It can also be helpful to add a proportion of ground pork to the meatloaf to make it more moist. Ground pork often comes from collagen-laden cuts and will have ample gelatin to add to the loaf, thus retaining moisture.)

Meatloaf that isn’t soggy

So, yes, we want our meatloaf moist, but we don’t want it grease-laden and soggy. If we take a pile of ground beef and pack it into a loaf pan, the fat that renders out has nowhere to go, and so the loaf swims in its own juices…but not in a good way. To solve this problem, make a free-form meatloaf. Shape it into a long mound on a sheet tray lined with parchment or foil, and the excess fat will drain away from the loaf during cooking. If you’ve properly bound and shaped your meatloaf and haven’t overcooked it, it will have the perfect texture without being soggy or dry.

Bonus: this shaping method also aids in slice and crust formation, but we’ll talk more about those below.

Flavorful meatloaf

Do you know what separates the cooking of most great chefs from that of the average home cook? Seasoning. Great cooks season their food well, and so should you!

Of course, you can flavor your meatloaf however you want, but for a classic presentation, it’s best to keep it simple. This recipe uses salt, pepper, onion, celery and garlic for flavor, with a splash of Worcestershire sauce for added depth and richness. The use of the aromatic onion, garlic, and celery gives the meatloaf that “home-cooked” flavor and smell that brings back old memories of Grandma’s cooking.

Onions, garlic and celery do pose one problem though: they don’t cook down easily. Little bits of crunchy onion or celery or potent, hot garlic will spoil the comforting aspect of eating meatloaf. To get around that obstacle, it’s best to finely chop the vegetal ingredients in a food processor (eliminating chunks) and then saute them—thus eliminating overly-potent flavors. No matter the recipe you choose to use, adding the sauté step will absolutely help your final flavor.

Meatloaf should slice, not crumble, nor should it be too dense

For that diner-worthy blue-plate special presentation, you need to be able to actually slice your meatloaf. It’s critical for both the plate and (leftovers willing) the sandwich bread. Luckily, some of the same things that keep our meatloaf moist also keep it together: binders. The name should make it clear, obviously, but binders like breadcrumbs and eggs cook together to give your meatloaf structure.

There is one more thing that helps to hold a meatloaf together, and that is mixing. Properly mixing a meatloaf prior to forming not only assures an evenness of flavor, but it also facilitates the linking of myosin in the meat, creating more of the protein network that will help to hold the slices together.

However, overmixing can cause meatloaf to become springy, rubbery, and too dense. If that myosin network gets built up too much, it’s bad news for the texture of your loaf. So, don’t mix it too heavily. Pre-mix some of your flavoring and binding ingredients before you add and combine the meat makes for easier, better mixing. It’s best to do all the mixing by hand, just until the meat barely starts to appear slightly fibrous and then stopping. Keep it light and you’ll be rewarded with better final texture.

Meatloaf should have a delectable outer crust

The well-cooked outer crust of a piece of meatloaf is one of the best parts. Whether it’s coated in a traditional ketchup glaze or layered with strips of bacon, the outside is where a lot of flavor development happens. By free-forming a meatloaf—not cooking it in a loaf pan—we get maximum surface area exposure, and therefore maximum flavor. So not only does it make it easier to slice and guard against sogginess, but mounding your meatloaf instead of panning it also makes your meatloaf literally tastier. Sounds like a plan to me!

That’s not a little bit of information there, but it’s pretty easy to digest. Use binder for moisture and structure. Free-form your loaf for ease of serving, preventing sogginess, and maximum flavor development. Season your loaf, cooking any vegetal ingredients, and, most importantly, make sure your meatloaf is cooked (after carryover) to a food-safe but not dried-out temperature of 160°F (71°C). Use your thermometer along the way and have comforting, delicious meatloaf tonight.

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An oven isn’t the only way to cook a meatloaf! We also have instructions for a great smoked meatloaf recipe.

Shop now for products used in this post:

ChefAlarm leave-in probe thermometer