In a large mixing bowl, combine the ground beef and pork. Add the finely chopped onion, minced garlic, breadcrumbs, egg, milk, allspice, nutmeg, salt, and pepper. Mix until just combined (do not overmix).
Form the mixture into small meatballs, about 1 inch in diameter. Place the meatballs on a baking sheet as you go.
In a large skillet, heat the olive oil over medium heat. Once hot, add the meatballs in batches. Brown them on all sides, about 5-7 minutes total. Remove the cooked meatballs and set aside.
In the same skillet, add the beef broth, soy sauce, and lingonberry jam. Stir well and bring to a simmer.
Slowly whisk in the heavy cream, and continue to cook, stirring occasionally until the sauce thickens slightly, about 5 minutes.
Add the cornstarch slurry to the sauce and cook for an additional minute until the sauce is creamy and smooth. Season with salt and pepper to taste.
Return the meatballs to the skillet and gently coat them in the sauce. Allow them to simmer in the sauce for 2-3 minutes, ensuring they are heated through.
Notes
Serve with creamy mashed potatoes or a side of lingonberry sauce for a traditional touch.
Keyword lingonberry sauce, meatballs, Swedish cuisine