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Family Pan Baked Spaghetti

A deep-pan baked spaghetti that feeds a full table, slices cleanly, and stays saucy instead of baking up dry.

  • By Ruthann
  • Published March 16, 2026
  • Last reviewed March 16, 2026
  • Total time 75 min
  • Yield 10 servings

Meet Ruthann About Ruthann’s Baking

Family Pan Baked Spaghetti baked in a deep casserole dish with browned cheese and saucy layers of spaghetti

If this is your kind of supper, breakfast, or bake, keepButtermilk Mashed Potatoes, Big-Batch Chicken and Dumplings, and Chicken Rice Casserole for 8 nearby for the next pan.

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If you want the household logic around this pan, keepBy Wednesday, the Supper Plan Breaks — Here Is How We Catch It and At 7:10, Breakfast Starts Too Fast — Here Is How We Hold It nearby too.

This is the kind of pan you make when people are hungry and dinner needs to feel like it is enough. The sauce is kept a little loose on purpose, because spaghetti keeps drinking even after it comes out of the oven.

If you are taking this to church, a family gathering, or a hard weeknight with extra mouths at the table, bake it until the edges are bubbling and the center is hot, then let it rest. That short rest is what turns it from a sloppy pan into a supper you can serve with confidence.

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Recipe details

Timing & yield

Prep
25 minutes
Cook / bake
50 minutes
Total
75 minutes
Yield
10 servings

Ingredients

Pasta

  • 1 1/2 pounds spaghetti
  • 1 tablespoon kosher salt for the pasta water

Meat sauce

  • 2 pounds ground beef
  • 1 large onion, diced
  • 1 green bell pepper, diced
  • 5 garlic cloves, minced
  • 2 tablespoons olive oil
  • 2 teaspoons kosher salt
  • 1 teaspoon black pepper
  • 1 1/2 teaspoons dried oregano
  • 1 teaspoon dried basil
  • 1/4 teaspoon red pepper flakes
  • 2 tablespoons tomato paste
  • 2 jars marinara sauce, 24 ounces each
  • 1 1/2 cups water

Finish

  • 2 cups shredded mozzarella
  • 3/4 cup grated parmesan

Method

  1. Step 1. Heat the oven to 375 degrees Fahrenheit and grease a 9x13 baking dish so the corners release cleanly after baking.
  2. Step 2. Bring a large pot of well-salted water to a boil and cook the spaghetti 2 minutes shy of the package time so it stays a little firm in the center.
  3. Step 3. While the pasta cooks, heat the oil in a wide skillet or Dutch oven over medium-high heat, then cook the beef, onion, and bell pepper with the salt and pepper until the beef is browned and the vegetables have softened.
  4. Step 4. Stir in the garlic, oregano, basil, red pepper flakes, and tomato paste, and cook for 1 minute until the tomato paste turns darker and smells sweeter instead of raw.
  5. Step 5. Pour in the marinara and water, scrape up the browned bits, and simmer the sauce for 10 minutes until it thickens slightly but still looks loose enough to coat the pasta generously.
  6. Step 6. Drain the spaghetti, add it to the sauce, and fold until every strand is coated; the pan should look a touch saucier than you want because the pasta will keep drinking as it bakes.
  7. Step 7. Spread half the spaghetti mixture into the baking dish, sprinkle on half the mozzarella and parmesan, then add the remaining spaghetti and top with the rest of the cheese.
  8. Step 8. Cover loosely with foil and bake for 25 minutes, then uncover and bake 10 to 15 minutes more until the edges bubble and the cheese is browned in spots.
  9. Step 9. Rest the pan for 10 minutes before serving so the slices hold together and the sauce can settle back into the pasta.

Equipment

  • large stock pot
  • 12-inch skillet or Dutch oven
  • 9x13 baking dish

Storage & safety

Refrigerate leftovers in shallow containers for up to 4 days. Reheat covered with a splash of water or sauce so the pasta loosens instead of drying out.

Safe minimum internal temperature: 160°F

Rest time: 10 minutes

Cool leftovers in shallow containers so the center does not stay hot for too long.

Reheat leftovers to 165°F before serving.

Ground beef should be fully cooked; color alone is not a safe doneness check.

Troubleshooting

The baked spaghetti turned dry
Spoon a little warm marinara or water over the pan, cover, and return it to the oven just long enough for the pasta to soften.
The center feels loose when cut
Let the pan rest longer. A full crowd pan needs a good 10 minutes for the sauce and cheese to set back up.

Recipe rescue notes

The sauce tastes flat after baking

Likely cause: The beef and tomato paste did not get enough browning before the sauce went in.

Fix: Add a little more salt, a pinch more oregano, and a spoonful of parmesan while the pan is still hot.

Next time: Let the meat get real color and cook the tomato paste until it darkens before you add the jars.

Substitutions

Ground beef
Use half ground beef and half Italian sausage for a richer pan. — Reduce the added salt slightly until you taste the finished sauce because sausage can bring its own seasoning.

Carryover / Next Meal Ideas

Spaghetti stuffed peppers

Chop leftover baked spaghetti, fold it with a little extra sauce, and stuff it into halved bell peppers for a second supper.

  • Bake the stuffed peppers covered until the peppers soften, then uncover to brown the top.

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