Homemade Swedish Meatball Pasta Bake (Creamy Family Dinner)

Ingredients

• 3/4 lb (340 g) ground beef, 85% lean
• 1/2 lb (225 g) ground pork
• 1/2 cup (45 g) fine dry breadcrumbs
• 1 large egg
• 1/4 cup (60 ml) milk
• 1/4 cup (35 g) finely minced yellow onion
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon ground allspice
• 1 tablespoon olive oil
• 10 oz (285 g) bowtie pasta
• 3 tablespoons unsalted butter
• 3 tablespoons all-purpose flour
• 2 1/2 cups (600 ml) low-sodium beef broth
• 1 cup (240 ml) heavy cream
• 1 tablespoon Worcestershire sauce
• 2 teaspoons Dijon mustard
• 1 cup (115 g) shredded Gruyere or Swiss cheese
• 2 tablespoons chopped fresh dill
• Lemon wedges, for serving