Prep the Oven and Pan: Start by preheating my oven to 350°F. While that’s heating up, I lightly grease a 9 x 5-inch loaf pan or line a baking sheet with parchment paper if I prefer to free-form my loaf.
Sauté the Aromatics: Heat the olive oil in a small skillet over medium heat. I add my finely chopped onion and sauté for about 5 minutes until soft, then stir in the minced garlic for just another minute until it smells amazing. Set this aside to cool for a few minutes.
Soak the Breadcrumbs: In a small bowl, I combine the 1 cup of Panko with the 1/3 cup of milk. Let this sit for a minute or two to create a "panade"—this is my secret to making sure the meatloaf stays incredibly moist and tender.
Whisk the Wet Ingredients: In a large mixing bowl, whisk together the 2 eggs, 2 tbsp ketchup, 1 tbsp Worcestershire sauce, salt, black pepper, Italian seasoning, and the fresh parsley. Mixing the spices into the liquid first ensures the flavor is even throughout the whole loaf.
Mix the Meatloaf: Add the 2 lbs of ground beef, the cooled onions and garlic, and the soaked Panko mixture into the large bowl. Now, here is the most important part: mix gently using my hands or a fork just until combined. Never overmix because that’s how you end up with a tough, dense meatloaf!
Shape and Bake: Transfer the meat mixture into my prepared loaf pan (or shape it into a loaf on my baking sheet). Pop it into the oven and bake it uncovered for about 40 minutes while you get the glaze ready.
Make and Apply the Glaze: While the meat is baking, I whisk together the 3/4 cup ketchup, brown sugar, vinegar, garlic powder, onion powder, Worcestershire sauce, and the optional mustard. After that first 40 minutes of baking, Pull the meatloaf out, spread that beautiful glaze generously over the top, and put it back in for another 25–35 minutes.
Rest and Serve: Once the internal temperature reaches 160°F, Take it out of the oven and always let the meatloaf rest for 10 minutes before slicing it; this lets the juices redistribute so every bite is perfectly moist!