Swedish Meatballs

Name: Swedish Meatballs
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: Southern, American
Ingredients: 2 slices white bread; 1/2 cup whole milk or cream; 4 Tbsp salted butter (divided use ); 1 medium onion (finely diced); 1 lb lean ground beef; 1 lb bulk ground pork; 3 medium cloves garlic (minced); 1 tsp salt; 1 tsp black pepper; 1/2 tsp allspice; 1/4 tsp ground nutmeg; 2 Tbsp worcestershire sauce; 2 large eggs (lightly beaten); 1/4 cup chopped fresh Italian parsley (plus additional for garnishing); olive oil for frying; 4 Tbsp butter; 1/4 cup all purpose flour; 2 cups beef broth; 1 cup heavy cream; 1 Tbsp Worcestershire sauce; 1 tsp Dijon mustard; salt and black pepper to taste; mashed potatoes or cooked egg noodles for serving