The Ultimate Comfort Classic: Cheesy Cast Iron Baked Spaghetti

There is something inherently magical about a meal that transitions seamlessly from the stovetop to the oven, emerging with a golden-brown cheese crust and bubbling crimson sauce. This Cheesy Cast Iron Baked Spaghetti is the definition of comfort food. It’s not just a pasta dish; it’s a family-style masterpiece that combines the nostalgic flavors of traditional spaghetti with the decadent, crispy edges only a seasoned cast iron skillet can provide. One bite of this savory pasta bake, and you’ll understand why it’s a viral favorite for home cooks everywhere.

Ingredients & Their Roles

• Spaghetti Noodles (16 oz): The foundation of the dish. We recommend using a high-quality semolina pasta to maintain structural integrity during the baking process.
• Ground Beef or Italian Sausage (1 lb): Provides the savory protein base. Using a mix of both adds a complex, fatty richness that elevates the sauce.
• Marinara Sauce (24-32 oz): Use your favorite premium brand or homemade sauce. The acidity balances the richness of the cheese.
• Mozzarella Cheese (2-3 cups, freshly shredded): This is the “star” that provides that iconic gooey cheese pull. Freshly shredded melts significantly better than pre-packaged bags.
• Parmesan Cheese (1/2 cup): Adds a salty, nutty bite and helps create that crispy, golden crust on top.
• Garlic & Onion: Essential aromatics that provide a deep, savory foundation for the meat sauce.
• Italian Herbs & Red Pepper Flakes: To boost the authentic Italian flavor profile with a hint of heat.

Step-by-Step Instructions

1. Prep the Pasta: Boil a large pot of heavily salted water. Cook your spaghetti for 2 minutes less than the package’s “al dente” instructions. It will finish cooking in the oven.
2. Sauté the Meat: In your 12-inch cast iron skillet, brown the meat over medium-high heat. Add diced onions and minced garlic, sautéing until fragrant and translucent.
3. Simmer the Sauce: Stir in your marinara sauce and seasonings. Let the sauce simmer on low for 10 minutes to allow the flavors to meld into a rich, robust base.
4. Combine: Toss the par-boiled spaghetti directly into the skillet. Use tongs to ensure every strand is thoroughly coated in sauce.
5. Layer the Cheese: Cover the entire surface with a generous layer of shredded mozzarella and Parmesan. Ensure the cheese reaches the very edges of the iron.
6. The Final Bake: Bake at 375°F (190°C) for 15–20 minutes. Finish under the broiler for 2 minutes to achieve a blistered, golden cheese topping.

Serving Suggestions

• Garlic Butter Crostini: Perfect for mopping up the extra sauce.
• Crisp Caesar Salad: The cold, acidic dressing cuts through the richness of the melted cheese.