01 -
Set your oven temperature to 350°F (175°C) and let it warm up.
02 -
Melt butter in a pan on medium. Cook the onions until they turn golden and sweet (this takes about 20-25 minutes). Add beef broth to the pan, stir it around, and let the liquid disappear. Let the onions cool off.
03 -
Use a big mixing bowl to combine the ground beef, breadcrumbs, milk, garlic, egg, Worcestershire sauce, mustard, thyme, salt, and pepper. Mix everything until it’s blended well.
04 -
Mix in the caramelized onions and half of the cheese. Shape the meat into a loaf and place it in a dish for baking.
05 -
Pop it in the heated oven and bake for an hour, or until the inside of the meatloaf hits 160°F (70°C).
06 -
Scatter the rest of the shredded cheese on top. Stick it back in the oven for 5-10 minutes, so the cheese melts and gets gooey.
07 -
Give the meatloaf a 10-minute break before slicing it up. Pair it with anything you love eating on the side.