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Zucchini Ground Beef Casserole

Ultimate Guide to Making Zucchini Ground Beef Casserole


  • Author: ranime
  • Total Time: 1 hr 10 mins
  • Yield: 6 servings 1x

Description

A flavorful layered casserole with ground beef, fresh zucchini, tomatoes, and melted cheese—perfect for using summer zucchini bounty or a weeknight family meal.


Ingredients

Scale
  • 1 lb (450g) ground beef (85/15 lean/fat)
  • 3 medium zucchinis (about 1.5 lbs), sliced 1/4-inch thick
  • 1 onion, diced
  • 3 garlic cloves, minced
  • 1 (14.5 oz) can diced tomatoes (or 2 fresh tomatoes)
  • 1 (6 oz) can tomato paste
  • 1 tsp dried oregano
  • 1 tsp dried basil
  • 1/2 tsp red pepper flakes (optional)
  • 1 1/2 cups shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • 2 tbsp olive oil (divided)
  • Salt and pepper to taste
  • Fresh parsley or basil for garnish

Instructions

  1. Prep: Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
  2. Brown beef: Heat 1 tbsp olive oil in skillet. Cook ground beef until no pink remains. Drain fat and set aside.
  3. Sauté veggies: In same skillet, add remaining oil. Cook onions 3 mins until soft. Add garlic, cook 30 secs until fragrant.
  4. Make sauce: Stir in diced tomatoes, tomato paste, oregano, basil, red pepper flakes, salt, and pepper. Simmer 5 mins. Return beef to skillet.
  5. Layer casserole: Arrange half the zucchini slices in baking dish. Top with half the beef mixture, then 1 cup mozzarella. Repeat layers.
  6. Top with cheese: Sprinkle Parmesan over top layer.
  7. Bake: Cover with foil, bake 30 mins. Uncover, bake 15-20 mins more until zucchini is tender and cheese is bubbly.
  8. Rest & serve: Let stand 10 mins. Garnish with fresh herbs.

Notes

  • For lower carbs: Substitute 1/2 the zucchini with eggplant slices.
  • Make ahead: Assemble unbaked casserole, refrigerate up to 24 hours (add 10 mins baking time).
  • Freezing: Freeze baked casserole for up to 3 months (thaw before reheating).
  • Prep Time: 20 mins
  • Cook Time: 50 mins
  • Category: Main Course
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1/6 casserole
  • Calories: 320
  • Sugar: 7g
  • Sodium: 480mg
  • Fat: 20g
  • Saturated Fat: 8g
  • Unsaturated Fat: 10g
  • Trans Fat: 0.5g
  • Carbohydrates: 12g
  • Fiber: 3g
  • Protein: 24g
  • Cholesterol: 70mg