Step 1

Mix together the milk and the panko crumbs and let set for a few minutes.

Step 2

In a large bowl, thoroughly blend together the ground beef and pork, seasonings, eggs and milk soaked panko. Shape into golf ball sized balls. (Makes about 36)

Step 3

Melt 2 tablespoons of butter in a large skillet over medium high heat. Working in batches to avoid overcrowding, sear the outsides of the meatballs and then transfer to a baking dish.

Step 4

Pour 1/2 cup of beef broth into the baking dish with the meatballs, cover tightly with foil and bake at 350 F for 30 minutes.

Step 5

While the meatballs are cooking, heat up 2 tablespoons of butter in the skillet you seared the meatballs in. Whisk in the flour, and then slowly pour in the beef broth. Bring gravy to a simmer over low heat, whisking constantly, until thickened. Stir in the sour cream.

Step 6

Once the meatballs have finished cooking, add them to the gravy and allow to simmer for about 5 minutes.