Step 1

Preheat oven to 325ºF.

Step 2

Set out a standard 9" x 5" loaf pan. (Line with a strip of parchment paper for easy removal if desired.)

Step 3

Add eggs, ketchup, Italian seasoning, kosher salt and pepper to a large bowl and whisk until well combined. Stir in onions, mushrooms, parsley and oats. With your hands mix in ground beef, just until combined. (Don't over-mix or your meatloaf will be tough.) Transfer mixture to loaf pan and gently press to fill; smooth the top with a spatula or the back of a spoon.

Step 4

Bake until the internal temperature reaches 160ºF,  1 to 1 1/4 hours. Allow to rest for 10 minutes before serving. Slice and serve.