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zucchini ground beef casserole in a small white bowl sitting on a white napkin
5 from 69 votes
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Zucchini Casserole with Ground Beef

An easy and delicious low carb casserole!
Prep Time5 mins
Cook Time55 mins
Resting time10 mins
Course: Main Course
Cuisine: American
Servings: 4
Calories: 543kcal
Author: Sula


  • 1-2 tablespoons olive oil for cooking
  • 1 onion medium yellow, chopped
  • 3 garlic cloves minced
  • 1 pound ground beef
  • 14 oz can diced tomatoes
  • 2 tablespoons tomato paste
  • 1 tablespoon Italian seasoning
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • ½ cup water
  • ½ cup Parmesan cheese shredded
  • 1 pound zucchini sliced
  • 1 cup cheese Italian blend


  • Heat oil in skillet on medium heat. Add onions and cook 2-3 minutes until softened but not brown.
  • Add ground beef. Break up the meat and cook, stirring regularly, until fully brown, about 4-5 minutes. (Drain any excess fat at this point, if applicable)
  • Add Italian seasoning, salt and pepper and minced garlic. Stir and cook for one minute.
  • Add diced tomatoes, tomato sauce and water. Mix well to make a sauce. Bring to a boil, then lower the heat and simmer, uncovered, for 7-10 minutes.
  • Add Parmesan cheese and zucchini and stir until well coated in sauce. Remove from heat.
  • Transfer mixture to a 2- to 3- quart casserole dish. Top with shredded Italian cheese.
  • Cover and bake in a 375F oven for 30 minutes. Remove cover and bake an additional 10 to 15 minutes uncovered. Remove from oven and allow to rest at least 10 minutes before serving.



Calories: 543kcal | Carbohydrates: 14g | Protein: 34g | Fat: 39g | Saturated Fat: 17g | Cholesterol: 119mg | Sodium: 1251mg | Potassium: 974mg | Fiber: 4g | Sugar: 8g | Vitamin A: 867IU | Vitamin C: 34mg | Calcium: 454mg | Iron: 5mg

Nutrition values are estimates only, using online calculators. Please verify using your own data.