French Onion Spaghetti and Meatballs combines tender Gruyère-filled meatballs with a rich, caramelized onion cream sauce for a sophisticated pasta dish that transforms classic French onion soup flavors into comfort food.
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In a large bowl, combine ground chuck, 2 tbsp minced garlic, diced onion, parsley, 1 tbsp thyme, breadcrumbs, 1/3 cup heavy cream, whisked eggs, onion soup mix, and beef bouillon powder.
Mix with your hands until just combined.
Cut the Gruyère cheese into 1/2-inch cubes.
Portion about 4 tablespoons of the meat mixture, flatten it into a patty, place a cheese cube in the center, and roll it into a ball, sealing the cheese inside.
In a large pan or skillet on medium heat, add high-heat oil. Brown the meatballs on all sides.
Once browned, remove the meatballs from the pan and set aside.
Reduce the heat to medium-low. In the same pan, add the sliced yellow onions.
Cook the onions for about 1 hour, stirring frequently, until they are deeply caramelized.
Turn the heat up to medium. Add 1 tbsp minced garlic, 1 tbsp thyme, salt, and pepper. Sauté for another minute until fragrant.
Create a well in the center of the onions. Add the butter and let it melt.
Sprinkle the flour over the butter and whisk to form a roux. Cook for 1 minute, then gradually whisk it into the onions.
Pour in the white wine to deglaze the pan, scraping up any browned bits from the bottom.
Gradually whisk in the beef broth, 1 cup of heavy cream, and soy sauce until the sauce is smooth.
Season the sauce with more salt and pepper to taste.
Return the browned meatballs to the sauce.
Let the meatballs simmer in the sauce for about 5 minutes to cook through.
Toss the sauce and meatballs with 1 pound of cooked spaghetti and serve immediately.
Refrigerate finished dish up to 3 days; freeze meatballs and sauce separately up to 3 months. Reheat gently on stovetop with splash of broth to prevent sauce from breaking.
Yes. Swiss, Emmental, or sharp cheddar work well, though Gruyère's nuttiness best mimics the soup's depth.
Proper caramelization takes 30-40 minutes over medium heat, stirring occasionally. Don't rush this step—it builds the sauce's signature flavor.
Yes. Form and refrigerate up to 24 hours before cooking, or freeze up to 3 months. Cook from cold, adding 2-3 minutes to bake time.
Omit it and increase beef bouillon powder to 2 tbsp, or use 1 cup beef broth mixed with 1 tsp dried onion. The soup mix adds thickening agents, so reduce cream slightly if substituting.
Ground chuck's fat content keeps meatballs moist. Turkey works but add 2 tbsp olive oil to the mix. Pork is an excellent substitute with similar binding properties.
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