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Baked Zucchini Noodle Spaghetti

Baked Zucchini Noodle Spaghetti is a simple, delicious, and healthy comfort food dinner the entire family will love! This low-carb dinner is a perfect way to load in sneaky veggies.

Course Main Course
Cuisine American
Diet GlutenFreeDiet
Prep Time 20 minutes
Cook Time 40 minutes
Servings 8
Calories 278 kcal
Author Amy Rains


  • 5 large zucchini
  • 2 tbsp olive oil or avocado oil
  • 1/2 large yellow onion diced
  • 3 cloves garlic minced
  • 1 lb ground beef
  • 2 tsp Italian Seasoning
  • 1 tsp sea salt + more to taste
  • 1 28oz can San Marzano Tomatoes
  • 2 tbsp red wine vinegar
  • 2 tbsp tomato paste
  • 1 cup shredded mozzarella divided
  • 1/3 cup freshly grated parmesan
  • 1/2 cup loosely packed fresh basil leaves


  1. Begin by preparing the zucchini. Slice off the tips and spiralize the zucchini. Place inside a colander and sprinkle some salt on the the zucchini. Let the zucchini "sweat" or sit for at least 20 minutes.

  2. Meanwhile, make the spaghetti sauce. Heat a large skillet to medium- medium high heat. Once the skillet is hot, add the oil, then the diced onion. Saute for 3-4 minutes, then add the miced garlic. Cook for another 2 minutes, and add the ground beef.

  3. Cook the ground beef, continuing to stir and break up with a wooden spoon. Once meat is no longer pink and cooked through, drain any excess liquid. Return to heat, add salt and Italian seasoning and stir. Finally, add in the tomatoes, vinegar, and tomato paste. Cook for 4-5 minutes, then reduce heat to a simmer for another 10 minutes. While sauce is simmering, heat the oven to 350 degrees.

  4. Drain any excess moisture out of the zucchini with paper towels. Place half of the zucchini in the casserole dish, then layer with half of the spaghetti sauce. Sprinkle 1/2 cup of the mozzarella on top. Layer with the remaining zucchini, then spaghetti sauce. Sprinkle the top with more mozzarella and the parmesan cheese.

  5. Transfer the dish to the oven and bake for 25 minutes, or until the top is bubbly and cheese is lightly golden. Serve hot with fresh basil and additional salt to taste.

Nutrition Facts
Baked Zucchini Noodle Spaghetti
Amount Per Serving
Calories 278 Calories from Fat 180
% Daily Value*
Fat 20g31%
Saturated Fat 7g44%
Trans Fat 1g
Polyunsaturated Fat 1g
Monounsaturated Fat 9g
Cholesterol 54mg18%
Sodium 532mg23%
Potassium 761mg22%
Carbohydrates 9g3%
Fiber 3g13%
Sugar 6g7%
Protein 17g34%
Vitamin A 601IU12%
Vitamin C 38mg46%
Calcium 177mg18%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.