Preheat oven to 375˚.
In a large bowl mix all the meatball ingredients together excluding the lingonberry/currant.
Form into meatballs and place on a jelly roll pan. Bake for about 20-25 minutes.
Once meatballs are done, pull out set aside and start gravy.
In a pan skillet, melt butter and saute onions.
Once onions are tender add in beef broth and milk whisking together until completely combined.
Whisk in flour and seasoning, continue to whisk until there are no lumps.
Place meatballs into gravy, allow to simmer for about 20 minutes.
Remove meatballs from gravy, add in sour cream and whisk until completely combined.
Serve by pouring some gravy over meatballs and a heaping Tbsp. of Lingonberry!