Start checking meatloaf at 1 hour for doneness. A full size loaf can take another 15 to 30 minutes, depending on your oven. If splitting into 2 small loaves, 1 small loaf takes 1 hour.
This is a great dish to make ahead on your day off, freeze, and then thaw and bake later for a quicker weeknight dinner.
Follow cooking instructions up through step 3. Form loaves in freezer-friendly disposable aluminum baking dishes (either one big 9x13 if you have a big family or dinner group, or 2 small 8x8 for two smaller dinners), cover tightly with foil or the plastic covers that sometimes come with disposable baking pans.
On the day when you're ready to cook, thaw the dish in your fridge during the day. Uncover, then proceed to step 4 , and cook as normal.