Creamy French Onion Pasta Bake

Ingredients:

• 1 pound (450g) pasta (penne, rigatoni, or any preferred shape)
• 2 tablespoons olive oil
• 4 large onions, thinly sliced
• 3 cloves garlic, minced
• 1 tablespoon balsamic vinegar
• 1 tablespoon Worcestershire sauce
• 1 teaspoon sugar
• 4 cups beef broth
• 1 cup heavy cream
• 1 cup grated Gruyère cheese
• 1 cup shredded mozzarella cheese
• 1 cup grated Parmesan cheese
• Salt and pepper to taste
• Fresh thyme leaves (optional, for garnish)

Instructions:

1. Cook the Pasta:

   • Bring a large pot of salted water to a boil.
   • Cook the pasta according to package instructions until al dente.
   • Drain and set aside.

2. Caramelize the Onions:

   • In a large skillet, heat the olive oil over medium heat.
   • Add the sliced onions and cook, stirring occasionally, until they are golden brown and caramelized. This should take about 25-30 minutes.
   • Add the minced garlic and cook for another 1-2 minutes until fragrant.
   • Stir in the balsamic vinegar, Worcestershire sauce, and sugar. Cook for another 2-3 minutes until the liquid is absorbed.
   • Season with salt and pepper to taste.

3. Prepare the Sauce:

   • Preheat the oven to 375°F (190°C).
   • Add the beef broth to the skillet with the caramelized onions and bring to a simmer.
   • Reduce the heat and let it cook for about 10 minutes, allowing the flavors to meld.
   • Stir in the heavy cream and let it simmer for another 5 minutes until slightly thickened.

4. Combine Pasta and Sauce:

   • In a large mixing bowl, combine the cooked pasta and the creamy onion sauce.
   • Add half of the Gruyère cheese, half of the mozzarella cheese, and half of the Parmesan cheese. Mix well to combine.

5. Bake:

   • Transfer the pasta mixture to a large baking dish.
   • Top with the remaining Gruyère, mozzarella, and Parmesan cheese.
   • Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly, and the top is golden brown.

6. Serve:

   • Remove from the oven and let it cool for a few minutes.
   • Garnish with fresh thyme leaves if desired.
   • Serve warm and enjoy!

This Creamy French Onion Pasta Bake is a delicious and comforting dish, perfect for a cozy dinner!