4.39 from 54 votes

Spaghetti Casserole

Layered pasta, creamy mushroom sauce, diced tomatoes, mushrooms and olives are combined to make a perfect weekend supper. Spaghetti Casserole is a must-make recipe!

A pan of spaghetti casserole.


Growing up, we ate a lot of baked pasta casseroles. My mom was a big fan of them and this recipe for Spaghetti Casserole was one of her favorites.

Being the picky kid that I was, I hated it. That was normal for me since I disliked pretty much all foods except for a few things. Now that I’m an adult, I can see the appeal.

This casserole is delicious comfort food and is worth the bit of extra assembly required to make it.

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    It requires a few extra steps to prepare it. You have to cook the spaghetti noodles first as well as brown the ground beef. The veggies are chopped and cooked separately. That creamy sauce comes from a can – it’s cream of mushroom soup! I’m not a big fan of canned cream of mushroom soup, but I like it in this recipe.

    It’s messy to eat but so good. It’s also huge so it serves a good amount of people. If your family is small, you’ll probably have some leftovers. It tastes just as good heated up the next day. 

    Why You’ll Love this Spaghetti Casserole

    • Delicious dinner
    • Meal for the whole family
    • Can make ahead of time and in bulk
    • Cheesy goodness
    • Good as leftovers 

    Ingredients 

    • Extra virgin olive oil
    • Onion
    • Green pepper
    • Canned diced tomatoes
    • Canned sliced mushrooms
    • Black olives
    • Oregano
    • Lean ground beef
    • Cooked spaghetti noodles
    • Cheddar cheese
    • Can of cream of mushroom soup
    • Water
    • Parmesan cheese
    Ingredients to make spaghetti casserole.

    How to Make Spaghetti Casserole

    • Step One: Preheat oven to 350F. Grease a 9×13 casserole dish with cooking spray.
    • Step Two: Heat olive oil in a large skillet over medium-high heat. Add ground beef, onions and green peppers and cook, stirring often, about 7 to 9 minutes, until beef is no longer pink and veggies are softened.
    Steps to make spaghetti casserole.
    • Step Three: Add tomatoes, mushrooms, black olives and oregano. Cook, uncovered, for 10 minutes, stirring occasionally.
    Steps to make spaghetti casserole.
    • Step Four: Add half of the spaghetti to the bottom of the casserole dish. Top with 1/2 of the tomato/beef mixture. Sprinkle 1 cup of cheddar cheese on top. Repeat these layers a second time.
    Steps to make spaghetti casserole.
    • Step Five: In a small bowl, mix together the cream of mushroom soup and water. Pour evenly onto the casserole. Top with Parmesan cheese.
    Steps to make spaghetti casserole.
    • Step Six: Bake for 30 minutes. Serve hot.
    A pan of spaghetti casserole.

    Equipment Needed

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    What to Serve with Spaghetti Casserole

    Although this could be a meal on its own, here are some options you could include for a side dish.

    A white pan of spaghetti casserole.

    Variations

    • Try substituting the ground beef for ground turkey or chicken.
    • You can replace spaghetti pasta noodles with other types of noodles.
    • Instead of cheddar, substitute in mozzarella or another cheese of your choice.
    • You can add in Italian sausages for more protein.
    A plate of spaghetti casserole.

    Storage Instructions

    How to Store Leftovers

    Spaghetti Casserole is best stored covered in the fridge for no more than 3 days.

    Can I Freeze Baked Spaghetti Dish?

    Yes, you can freeze Spaghetti Casserole as long as it is covered and eaten within 3 months to avoid freezer burn!

    A plate of spaghetti casserole.

    Easy Dinner Recipes

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    4.39 from 54 votes

    Spaghetti Casserole

    Created by Stacie Vaughan
    Servings 8
    Prep Time 15 minutes
    Cook Time 30 minutes
    Total Time 45 minutes
    Layered pasta, creamy mushroom sauce, diced tomatoes, mushrooms and olives are combined to make a perfect weekend supper.

    Ingredients
     
     

    • 1 tbsp extra virgin olive oil
    • 1 sweet onion chopped
    • 1 green pepper chopped
    • 1 can diced tomatoes 28oz can
    • 1 can sliced mushrooms 8oz/284ml can, drained
    • ½ cup black olives sliced
    • 2 tsp oregano
    • 1 lb lean ground beef
    • 4 cups spaghetti noodles cooked, divided
    • 2 cups cheddar cheese shredded, divided
    • 1 can cream of mushroom soup 10.5oz/284ml can
    • ¼ cup water
    • ¼ cup Parmesan cheese shredded

    Instructions

    • Preheat oven to 350°F. Grease a 9×13 inch casserole dish with cooking spray.
    • Heat olive oil in large skillet over medium high heat. Add ground beef, onions and green peppers and cook, stirring often, about 7 to 9 minutes, until beef is no longer pink and veggies are softened.
    • Add tomatoes, mushrooms, black olives and oregano. Cook, uncovered, for 10 minutes, stirring occasionally.
    • Add half of the spaghetti to the bottom of the casserole dish. Top with 1/2 of the tomato/beef mixture. Sprinkle 1 cup of cheddar cheese on top. Repeat these layers a second time.
    • In a small bowl, mix together the cream of mushroom soup and water. Pour evenly on to the casserole. Top with Parmesan cheese.
    • Bake for 30 minutes. Serve hot.

    Video

    Nutrition

    Serving: 1bowl | Calories: 442kcal | Carbohydrates: 46g | Protein: 27.7g | Fat: 16.3g | Saturated Fat: 7.3g | Polyunsaturated Fat: 7.4g | Trans Fat: 0.3g | Cholesterol: 63.7mg | Sodium: 719.7mg | Fiber: 3.5g | Sugar: 6.4g

    The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.

    Course Casseroles
    Cuisine American
    Keyword family recipe, spaghetti casserole

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    Recipe Rating




    37 Comments

    1. Interesting the many people who want to omit the olives; it was the olives in the pictures of the dish that immediately sold me on this recipe!  

    2. I never hated much as kid except for my mom’s white sauce on waffles, and still think I wouldn’t want to eat that, but a casserole like this would be great.

    3. I always have leftover spaghetti on hand. This would be a yummy way to use it up.

    4. I never used to like olives, but as an adult the taste has really grown on me. This casserole would be yummy.

    5. This looks bomb, the combination of the two is awesome and a delicious idea.

    6. You are rockin the recipes!! This one looks amazing, too. Reminds me of a dish that we have at our favorite local pizza restaurant and it is so good…I love the olives!

    7. Donna Wilson says:

      This looks delicious (minus the olives)!

    8. I also love casseroles and like all the ingredients in this one.

    9. I would love to make this dish for my family

    10. What a wonderfu lcasserole that I will love trying out.It looks very deliciousand a real comfort food.!

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