Skinny Baked Spaghetti
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This Skinny Baked Spaghetti is a higher protein, lower fat version of Million Dollar Spaghetti that still tastes amazing and will fill that pasta craving while keeping your eating habits on track. Or if you just want traditional Spaghetti, I have a recipe for that too!

Baked Spaghetti | Million Dollar Spaghetti
Baked Spaghetti, or sometimes referred to as Million Dollar Spaghetti, is a huge spaghetti casserole that is covered with sauce, cheese, and butter (!!!) and baked until hot and bubbly. It is pretty phenomenal, but since we’re all looking to be a bit healthier in the new year, I thought I’d create a lighter version with more protein and much less fat. Carbs, yes, but much more figure-friendly than the original.
If you love baked pasta dishes try these other recipes out: Classic Baked Ziti, Baked Rigatoni Pasta, The Best Lasagna Recipe, and Baked Ravioli with Brown Butter Alfredo.


Main Ingredients Needed
This ingredients might be long but it’s actually quite simple! Don’t be intimidated, here’s everything you’ll need to make Baked Spaghetti:
- Protein Plus Spaghetti Pasta – this pasta is a spaghetti high in protein and fiber. You can replace this with regular spaghetti pasta if desired.
- Parmesan Cheese – to be melted on top! Use the real stuff people, it makes a difference.
- Parsley Flakes – used as a garnish and is optional.
For the Red Sauce
Of course, if you have a better tomato sauce you’d prefer than this one I used, feel free to use that instead. This or this are great options. Also, just using straight-up jarred marinara with a few veggies would work too. You do you, buttercup 🙂
- Olive Oil – used to cook the onion and mushrooms.
- Yellow Onion + Button Mushrooms – cooked together for maximum flavor!
- Ground Beef (95% lean) – you could also use ground turkey if that is a healthier option for you.
- Garlic – for flavor.
- Basil, Oregano, Italian Seasoning, Bay Leaves, Salt + Pepper – all of the seasonings that elevate this sauce to the next level.
- Marinara Sauce + Water – I used Rao’s brand of marinara sauce which I think is definitely worth the price. And some water to thin it out.
For the Bechamel Sauce (White Sauce)
- Butter + Flour – to make a roux which is the base of this sauce.
- Milk (Low Fat) – added to then make a bechamel sauce. Be sure to turn the heat to low before adding the milk so it doesn’t curdle or separate.
- Salt + Pepper – season to taste.
- Nutmeg – for a bit of nuttiness.

How to Make Baked Spaghetti
For full details on how to make baked spaghetti see the recipe card down below 🙂
Make the Sauce
Heat olive oil over medium heat in a large, deep pot. Saute onion and mushroom until tender, about 6 minutes. Add in ground beef and break apart as it browns. Stir in minced garlic and seasonings. Pour in sauce and water. Stir, cover, bring to boil then reduce to simmer, and cook 30 minutes to 1 hour, adding in a little water if the sauce gets too thick.
Cook Pasta
Cook the pasta according to pasta directions in salted boiling water. Drain and set aside.
Make the Bechamel Sauce
Melt butter over medium heat in a small pot. Sprinkle flour over top and whisk to create a paste. Cook 1 minute. Whisk in milk slowly in three parts, allowing the sauce to thicken and bubble before adding in each additional splash. Stir in salt, pepper, and nutmeg to taste.
Assemble + Bake
Pour cooked spaghetti into a lightly greased 9×13 glass baking dish. Top with pasta sauce evenly. Drizzle bechamel sauce overtop the red sauce and any pasta noodles that didn’t get covered. Sprinkle with cheese and bake until hot and bubbly.
Serve
Cut into 12 squared and serve hot.

Storing Instructions
Baked Spaghetti can be stored in the fridge for up to 3 days, stored in an airtight container, of course. Which makes this a great make-ahead meal to enjoy for lunch for a couple of days.
Freezing Baked Spaghetti
Alternatively, you can freeze this dish for up to 3 months!
I’d recommend storing it in an aluminum baking dish to make things easier. Then to reheat, thaw in the fridge overnight, then either nuke it in the microwave or bake until heated through.

More Spaghetti Recipes to Try!
- Cheesy Chicken Spaghetti Recipe
- 45-Minute Spaghetti and Meatballs
- Lemon Spaghetti
- Spaghetti Carbonara from the Carnival Sunshine
- Gluten-Free Spaghetti
Printable recipe card below!
Enjoy!! xoxo

Macro Friendly Baked Spaghetti
Ingredients
For the Sauce–
- 2 tablespoons olive oil
- 1 medium yellow onion diced
- 8 oz. button mushrooms finely chopped
- 1 lb. grass fed ground beef 95% lean
- 2 cloves garlic minced
- 2 teaspoons dried basil
- 1 teaspoon dried oregano
- 1/2 teaspoon Italian seasoning
- 2 dried bay leaves
- salt & pepper to taste
- 32 oz marinara sauce I used Rao’s brand
- 1 cup water
For the Bechamel White Sauce–
- 1 tablespoon salted butter
- 1 tablespoon all purpose flour
- 1 cup low fat milk
- salt & pepper to taste
- pinch nutmeg
- 14.5 oz Protein Plus Spaghetti Pasta I used Barilla brand
- 1/2 cup parmesan cheese grated
- dried parsley flakes for garnish, optional
Instructions
- Heat olive oil over medium heat in a large, deep pot. Saute onion and mushroom until tender, about 6 minutes. Add in ground beef and break apart as it browns. Stir in minced garlic and seasonings.
- Pour in sauce and water. Stir, cover, bring to boil then reduce to simmer, and cook 30 minutes to 1 hour, adding in a little water if the sauce gets too thick.
- Cook pasta according to pasta directions in salted boiling water. Drain and set aside.
- Melt butter over medium heat in a small pot. Sprinkle flour over top and whisk to create a paste. Cook 1 minute. Whisk in milk slowly in three parts, allowing the sauce to thicken and bubble before adding in each additional splash. Stir in salt, pepper, and nutmeg to taste.
- Pour cooked spaghetti into a lightly greased 9×13 glass baking dish. Top with pasta sauce evenly. Drizzle bechamel sauce over top the red sauce and any pasta noodles that didn't get covered. Sprinkle with cheese and bake at 375 degrees for 20-25 minutes or until hot and bubbly.
- Cut into 12 squared and serve hot.






[…] this Hamburger Helper Cheeseburger Macaroni Recipe, try these other ground beef + pasta recipes: Baked Spaghetti, Cheesy Taco Pasta, Cheeseburger Casserole, The Best Lasagna Ever and Taco […]
Made this gluten free for my family tonight and it was a hit! I also used lactose free milk to reduce the dairy. I didn’t realize it needed to simmer for 1.5 hours so it only simmered for about 20 minutes due to time and I don’t think it made a great difference. Flavor was still great! I will definitely make again. This would make for great left overs or prepping food for the week.
This is one of the best recipes I have tried from Lauren. I’m not a great cook and really just started cooking since retirement. So this recipe was a little intense for me. Saying that, my wife was still bragging about how good it was the next morning. Thanks Lauren for all the recipes you post.
What an amazing recipe. Thank you so much for it. Will be definitely be making it. My sons are going to love it!!!
I wonder if you could try making a version with one of the vegetable pastas, like spaghetti squash or one of the other possible frozen alternatives. It would be a great recipe for diabetics!
I think you may want to check the nutrition again. I get 23 g of carbs per serving. That is: (39 * 7)/12.
My nutrition calculator must have had a glitch. I re-calculated them all and they should be all right.
My family’s favorite dish!❤
129 calories??!!
[…] Skinny Baked Spaghetti […]
[…] Skinny Baked Spaghetti […]
I made this for dinner the other night and my family loved it! Thanks.
This looks delicious and will definitely be trying it in the near future.
This is by far my favorite spaghetti recipe! Every time I make it, my youngest gets so excited!
I’ve made this and it’s delciois. A nice different twist on ?