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Meaty Zucchini Casserole with Ground Beef Recipe

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4.2 from 50 reviews

Meaty Zucchini Casserole with Ground Beef is a hearty, low-carb comfort dish featuring tender zucchini, savory ground beef, rich tomato sauce, and melted cheese. This casserole blends fresh summer vegetables with Italian-inspired flavors for a satisfying family meal or meal prep option.

  • Total Time: 45 minutes
  • Yield: 6 servings

Ingredients

Main Ingredients

  • 1 lb ground beef
  • 1 tbsp olive oil
  • 1 small onion, diced
  • 3 cloves garlic, minced
  • 3 medium zucchini, sliced or diced
  • 1 cup marinara or tomato sauce
  • 1 tsp Italian seasoning
  • ½ tsp salt
  • ¼ tsp black pepper
  • 1 cup shredded mozzarella cheese
  • ½ cup shredded cheddar or Parmesan cheese

Optional Garnish

  • Fresh parsley or basil, optional garnish

Instructions

  1. Preheat the Oven: Set your oven to 375°F (190°C) and grease a 9×13-inch baking dish to prevent sticking.
  2. Cook Ground Beef: Heat olive oil in a large skillet over medium heat. Add ground beef and cook until fully browned, breaking it apart. Drain any excess grease to keep the dish lean.
  3. Sauté Aromatics: Stir in diced onion and cook for 3–4 minutes until softened and translucent. Add minced garlic and cook for an additional 30 seconds to release its aroma.
  4. Add Zucchini and Seasonings: Mix in the sliced or diced zucchini, marinara sauce, Italian seasoning, salt, and black pepper. Simmer the mixture for about 5 minutes until the zucchini softens slightly but still holds its shape.
  5. Transfer to Baking Dish: Pour the zucchini and beef mixture into your prepared baking dish, spreading it evenly.
  6. Add Cheese Topping: Evenly sprinkle shredded mozzarella and cheddar (or Parmesan) cheese over the top of the casserole for a rich, melty finish.
  7. Bake: Place the dish in the preheated oven and bake uncovered for 25–30 minutes. Bake until the casserole is bubbly and the cheese on top is lightly golden.
  8. Garnish and Serve: Remove from oven, garnish with fresh parsley or basil if desired, and serve warm for a comforting, flavorful meal.

Notes

  • Salt zucchini lightly and drain excess moisture if it appears watery to avoid a soggy casserole.
  • Add red pepper flakes if you prefer a spicy kick.
  • For a lighter version, substitute ground turkey instead of ground beef.
  • Leftovers can be stored in the refrigerator for up to 4 days and reheated for convenient meals.
  • Author: Jessica
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Casserole / Main Course
  • Method: Baking
  • Cuisine: American / Italian-Inspired
  • Diet: Gluten Free