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baked spaghetti casserole in baking dish

Baked Spaghetti Casserole

Diana Rattray
This spaghetti casserole brings all of your favorite pasta dinner ingredients in a one dish meal. You'll make this recipe again and again.
5 from 1 vote
Servings 4 to 6 servings
Calories 753
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour

Ingredients
  

  • Cooking spray, for the baking dish
  • 2 tbsp olive oil
  • 1 pound ground beef
  • 1 cup chopped onion
  • ½ cup diced green bell pepper
  • 3 cloves garlic, minced
  • 1 (14.5-ounce) can diced tomatoes, with juice
  • 1 (8-ounce) can tomato sauce
  • 1 bay leaf
  • 1 tbsp parsley, chopped
  • 1 tbsp fresh chopped basil, or about 1 teaspoon dried
  • ½ tsp kosher salt, or to taste
  • ¼ tsp black pepper, or to taste
  • Optional: 1/4 teaspoon crushed red pepper flakes, or to taste
  • 8 ounces spaghetti, uncooked
  • ¼ cup Parmesan cheese, grated, plus more for serving
  • 2 cups mozzarella cheese, shredded

Recommended Equipment

Instructions

  • Heat the oven to 375°F.
  • Spray a shallow 2 1/2-quart baking dish with cooking oil spray.
    Cooking spray
  • Heat the olive oil in a large skillet over medium heat. Add the ground beef and cook for 6 minutes, stirring frequently. Drain and discard excess fat, if desired.
    2 tbsp olive oil | 1 pound ground beef
  • To the browned beef, add the onion, bell pepper, and garlic and continue to cook for 2 to 3 minutes longer, or until the onion is softened.
    1 cup chopped onion | 1/2 cup diced green bell pepper | 3 cloves garlic
  • Add the tomatoes, tomato sauce, bay leaf, parsley, basil, kosher salt, and black pepper, along with the crushed red pepper flakes, if using. Bring to a simmer. Reduce the heat to low and simmer the sauce for 15 minutes.
    1 (14.5-ounce) can diced tomatoes | 1 (8-ounce) can tomato sauce | 1 bay leaf | 1 tbsp parsley | 1 tbsp fresh chopped basil | 1/2 tsp kosher salt | 1/4 tsp black pepper | Optional: 1/4 teaspoon crushed red pepper flakes
  • Remove the bay leaf and stir the Parmesan cheese into the sauce.
    1/4 cup Parmesan cheese
  • Meanwhile, cook the spaghetti in boiling salted water following the package directions. Drain well.
    8 ounces spaghetti
  • Combine the drained spaghetti with the sauce mixture and toss to blend thoroughly.
  • Turn the spaghetti mixture into the prepared baking pan and sprinkle with the shredded mozzarella cheese evenly over the top.
    2 cups mozzarella cheese
  • Bake for about 20 minutes, or until the casserole is bubbling around the edges and the cheese is melted.
  • Serve the casserole with garlic bread and pass more Parmesan cheese at the table.

Nutrition

Calories: 753kcalCarbohydrates: 58gProtein: 43gFat: 38gSaturated Fat: 17gPolyunsaturated Fat: 1gMonounsaturated Fat: 14gTrans Fat: 1gCholesterol: 129mgSodium: 1113mgPotassium: 757mgFiber: 4gSugar: 9gVitamin A: 829IUVitamin C: 24mgCalcium: 415mgIron: 4mg

Disclaimer:

Our nutritional information is based on a third-party application that analyzes the ingredients list to determine the values. The information is meant to be helpful, but should be considered an estimate. Values may differ depending on measurements, brands, serving variations, and database availability.

Keyword spaghetti casserole
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