Mashed Potato Stuffed Meatloaf

Homemade mashed potatoes and incredible meatloaf....comfort food at it's best! 

Mashed Potato Stuffed Meatloaf

2-3 cups homemade mashed potatoes made with cream and butter
1 tablespoon olive oil
1 cup onion, chopped
1 teaspoon chopped fresh thyme leaves
2 teaspoons kosher salt
1 teaspoon pepper
3 tablespoons Worcestershire sauce
1/3 cup chicken stock or broth
1 tablespoon tomato paste
2 1/2 pounds ground chuck (at least 80% lean)
1/2 cup Progresso plain dry bread crumbs
2 extra-large eggs, beaten
1/2 cup Heinz ketchup

Heat oven to 375°F. Spray 9-inch square pan with cooking spray.
Heat the olive oil in a medium saute pan. Add the onions, thyme, salt, and pepper and cook over medium-low heat, stirring occasionally, for 8 to 10 minutes, until the onions are translucent but not brown. Take it off the heat and then add the Worcestershire sauce, chicken stock, and tomato paste. Allow to cool slightly.

In a large bowl, combine the ground chuck, cooled onion mixture, bread crumbs, and eggs, and mix lightly with a fork. Don't mash or the meat loaf will be dense. Press half of beef mixture into pan. Spread mashed potatoes on top; cover with remaining beef mixture.

Spread the ketchup evenly on top. Bake for 60 minutes or, until the internal temperature is 160 degrees and the meat loaf is cooked through. Cool for 15 minutes and cut into squares.