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Easy baked spaghetti.
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5 from 553 votes

Easy Baked Spaghetti

This Baked Spaghetti Recipe is a cheesy vegetarian pasta casserole dish that's simple to make, requiring only one pan in the oven, and a family favorite meal.
Course Entree
Cuisine American, Italian
Prep Time 10 minutes
Cook Time 55 minutes
0 minutes
Total Time 1 hour 5 minutes
Servings 8 servings
Calories 387kcal
Author Yumna Jawad



  • Preheat the oven to 375˚F. Place the uncooked spaghetti in a 9 x 13-inch baking dish. Add the olive oil, garlic, onions, Italian seasoning and salt. Use your hands to gently toss and evenly distribute the ingredients.
  • Add the bell pepper, canned diced tomatoes, water, marinara and basil on top of the spaghetti, and toss it again using tongs to evenly coat the spaghetti with the sauce and vegetables.
  • Bake uncovered for 40 minutes. Toss the spaghetti and sprinkle with mozzarella cheese. Continue baking uncovered for 15-20 more minutes or until the top is browned and bubbly.
  • Remove from the oven, garnish with fresh basil and parmesan cheese and serve.



Storage: Transfer leftovers to an airtight container and store in the refrigerator. To reheat, place in a 350°F oven until warmed through, or warm gently in a pan on the stovetop with a splash of water. You can also reheat easy baked spaghetti in the microwave. I recommend covering it with a paper towel to reduce splattering, then microwave on high in 30-second increments until warmed through. This easy baked spaghetti will keep in the refrigerator for four to five days. 
Freezer: You can freeze it before you bake it. Assemble baked spaghetti casserole and then wrap it securely and freeze. Transfer to the refrigerator to thaw overnight and bake according to the instructions. You can also freeze the baked spaghetti for up to three months. Thaw overnight in the refrigerator, then warm in the oven until piping hot.

Substitutes: For best results, follow the recipe as is. However this recipe is very loose and easy to adapt to your preferences.
Serving Size: One serving is about 2 ounces of spaghetti.


Serving: 2oz | Calories: 387kcal | Carbohydrates: 51g | Protein: 15g | Fat: 14g | Saturated Fat: 5g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 7g | Cholesterol: 22mg | Sodium: 839mg | Potassium: 480mg | Fiber: 4g | Sugar: 6g | Vitamin A: 620IU | Vitamin C: 22mg | Calcium: 198mg | Iron: 2mg