Paula Deen’s Baked Spaghetti Recipe: Cheesy Southern-Style Casserole

This baked spaghetti delivers the rich, comforting flavors of Southern home cooking. A layered casserole of tender pasta, hearty meat sauce, and melted cheese creates a dish that’s both satisfying and impressive.

With a simple preparation and classic ingredients, it’s a foolproof way to bring restaurant-quality results to your dinner table. Perfect for feeding a crowd or meal prepping for the week.

Ingredients for Paula Deen Baked Spaghetti

Classic Southern pantry staples and a few fresh additions create this hearty casserole.

For authentic Southern flavor, use 80/20 ground beef—the fat adds richness. Costco or Sam’s Club offer the best bulk pricing for the volume needed here. Canned tomatoes should be San Marzano if available, though any quality brand works. The cheeses? Block cheeses shredded at home melt better than pre-shredded (which contains anti-caking agents).

No green bell pepper? Red or yellow bell peppers add sweetness. Swap ground beef for ground turkey or Italian sausage for variation. Fresh tomatoes can replace canned in a pinch (use about 4 large, peeled). Half-and-half works instead of whole milk, and Parmesan can boost the cheesy depth if desired.

Assemble and refrigerate up to 24 hours before baking. Leftovers keep 4-5 days in the fridge or freeze for 3 months. Reheat covered to prevent drying out.

Step-by-Step Instructions for Cheesy Baked Spaghetti

Master this Southern classic with my tested method for layers of rich, cheesy perfection every time.

Step 1: Prepare the Spaghetti and Brown the Ground Beef

Cook the 1 lb Spaghetti Noodles in salted boiling water until al dente, about 8-10 minutes. Drain well and toss with 1 tablespoon of the 0.25 cup Unsalted Butter to prevent sticking. Break the noodles in half for easier layering.

Meanwhile, in a large skillet over medium-high heat, brown the 1.5 lb Ground Beef with the finely diced 1 whole Yellow Onion and 1 whole Green Bell Pepper. Cook for 8-10 minutes, breaking the meat into small pieces, until the beef is no longer pink and the vegetables are softened.

Step 2: Build the Rich Tomato Sauce Base

Add the minced 3 cloves Garlic Cloves to the skillet and cook for 30 seconds until fragrant. Stir in the 2 cans Canned Diced Tomatoes, 2 cans Tomato Sauce, 1 can Tomato Paste, 2 tsp Dried Italian Seasoning, 1.5 tsp Salt, and 1 tsp Ground Black Pepper.

Reduce the heat to medium and let the mixture simmer for 10 minutes, stirring occasionally, until the sauce thickens slightly and the flavors meld together beautifully. This step ensures a deep, hearty base for your casserole.

Step 3: Combine All Elements for the Casserole

In a large bowl, combine the cooked spaghetti, meat sauce, and 0.5 cup Whole Milk. Mix well to ensure every strand of pasta is coated with the rich, savory sauce. This step guarantees that every bite is packed with flavor.

Melt the remaining 0.25 cup Unsalted Butter and stir in 2 cups Shredded Monterey Jack Cheese and 1 cup of the 3 cups Shredded Cheddar Cheese. This cheesy butter mixture will add a creamy, indulgent layer to your dish.

Step 4: Layer and Bake to Golden Perfection

In a greased 9×13-inch baking dish, layer half of the spaghetti mixture, followed by half of the cheesy butter mixture. Repeat the layers, ending with the remaining 2 cups Shredded Cheddar Cheese sprinkled on top.

Bake in a preheated 350°F oven for 25-30 minutes, until the casserole is bubbly around the edges and the cheese on top is golden brown and melted. Let it rest for 5-10 minutes before serving to allow the layers to set.

Flavor Customization for This Recipe

Spice It Up

Add ½ tsp red pepper flakes or 1 diced jalapeño to the meat sauce while simmering for a subtle kick. I love how this balances the richness without overwhelming the dish. 🌶️

Herb Variations

Swap 2 tsp dried Italian seasoning for 1 tbsp fresh basil and oregano for brighter flavor. You can also add 1 tsp dried rosemary for a piney note that complements the cheese beautifully.

Meat Swaps

Replace 1.5 lb ground beef with ground turkey or Italian sausage for a different twist. Sausage adds fennel notes, while turkey keeps it lighter. Both still deliver that hearty Southern feel.

Cheese Upgrades

Mix in ½ cup grated Parmesan with the cheddar and Monterey Jack for extra umami depth. Or try pepper jack cheese for a spicy surprise in every bite.

Creamy Additions

Stir ½ cup sour cream into the cheesy butter mixture before layering. This adds tang and richness that makes the casserole even more decadent. Trust me, it’s worth the extra calorie. 💛

Veggie Boost

Add 1 cup sautéed mushrooms or diced zucchini to the meat sauce for extra texture and nutrition. Just cook them down first to avoid a watery casserole.

Frequently Asked Questions