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Home » Recipe Index » Ground Beef Zucchini Casserole

Ground Beef Zucchini Casserole

June 12, 2025 by AleenaDinner

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Hearty and nourishing, this ground beef zucchini casserole is feel-good comfort food your whole family will love. It’s deliciously cheesy, high in protein, and packed with healthy veggies, making it a perfect dish for weeknight dinners or gatherings.

Why You’ll Love This Recipe

  • Easy to Prepare: With simple ingredients and straightforward steps, this casserole can be made quickly, even on busy nights.
  • Flavorful and Satisfying: The combination of ground beef, zucchini, and cheese creates a hearty meal that delights the taste buds.
  • Versatile Ingredients: You can easily swap out ingredients based on what you have on hand or your family’s preferences.
  • Healthy Twist: Packed with vegetables and protein, this dish offers a nutritious option without sacrificing taste.
  • Great for Meal Prep: Make a large batch ahead of time, and enjoy leftovers throughout the week!

Tools and Preparation

To prepare the ground beef zucchini casserole effectively, you’ll need some essential tools.

Essential Tools and Equipment

  • Casserole dish (9×13 inch)
  • Large pan
  • Knife
  • Cutting board
  • Spatula

Importance of Each Tool

  • Casserole dish: A sturdy dish helps ensure even cooking and makes serving easy.
  • Large pan: Ideal for browning the meat and sautéing vegetables without overcrowding.
  • Knife: A sharp knife allows for quick and efficient chopping of onions and zucchini.
  • Spatula: Perfect for mixing ingredients thoroughly while protecting your casserole dish.

Ingredients

Hearty and nourishing, this ground beef zucchini casserole is feel-good comfort food your whole family will love. Deliciously cheesy, high protein, and packed with healthy veggies.

For the Casserole

  • 1 cup dry quinoa (cooked according to package instructions)
  • 2 tbsp olive oil (divided)
  • 1 lb lean ground beef
  • 3 cloves garlic
  • 1 cup yellow cooking onion (diced)
  • 6 zucchinis (approx 2 lbs, sliced into ¼ inch rounds)
  • Salt and black pepper (to taste)
  • 2 cups low sugar tomato sauce
  • 1 tsp dried oregano
  • ½ tsp garlic powder
  • 1 tbsp Italian seasoning
  • 1 cup cottage cheese (ricotta cheese will also work)
  • 2 cups mozzarella cheese (shredded)
  • 2 tbsp parmesan cheese
  • Fresh basil (for topping)

How to Make Ground Beef Zucchini Casserole

Step 1: Preheat the Oven

Preheat the oven to 375F. Grease a 9×13 inch casserole dish to prepare it for baking.

Step 2: Cook Quinoa

Cook quinoa according to package instructions while preparing other ingredients.

Step 3: Cook the Beef

In a large pan over medium-high heat, add ½ of the olive oil (1 tbsp). Once hot:
* Add ground beef, minced garlic, and diced yellow onions.
* Cook until meat is no longer pink. Ensure onions are fragrant and translucent.
* Season with salt and pepper. Drain excess oil.
* Transfer cooked meat mixture to the greased casserole dish. Set aside.

Step 4: Sauté Zucchini

In the same pan (do not clean it):
* Add remaining olive oil (1 tbsp).
* Once hot, add sliced zucchini along with additional salt and pepper.
* Cover and cook for about 5 minutes until soft.

Step 5: Combine Ingredients

In the casserole dish with cooked meat:
* Add sautéed zucchini, spices, cottage cheese, cooked quinoa, tomato sauce, and half of the mozzarella cheese.
* Stir together using a spatula. Gently spread contents into an even layer in the dish.
* Top with remaining mozzarella cheese and Parmesan cheese.

Step 6: Bake

Bake for approximately 30 minutes:
* Set oven to broil for the final 5 minutes to brown the cheese (25 minutes on regular bake followed by 5 minutes on broil).
* Top with fresh basil before serving. Enjoy your delicious ground beef zucchini casserole!

How to Serve Ground Beef Zucchini Casserole

Ground beef zucchini casserole is a versatile dish that can be served in many ways. Whether you want a cozy family dinner or a quick meal for guests, these serving suggestions will enhance your experience.

Family Style

  • Present the casserole directly in the baking dish for a casual family meal. This allows everyone to serve themselves and enjoy seconds!

Individual Portions

  • For a more elegant presentation, scoop the casserole into individual ramekins. This adds a touch of sophistication and makes it easy for guests to enjoy.

With Fresh Herbs

  • Top each serving with freshly chopped basil or parsley before serving. This adds brightness and enhances the flavors of the dish.

Alongside Salad

  • Serve with a crisp green salad on the side. A fresh salad balances the richness of the casserole and adds nutrients to your meal.

With Crusty Bread

  • Pair with slices of crusty bread or garlic bread. The bread can be used to scoop up the casserole, making for an enjoyable dining experience.

As Leftovers

  • Enjoy leftovers for lunch! Reheat individual portions in the microwave for a quick and satisfying meal that tastes just as good as when it’s freshly baked.
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How to Perfect Ground Beef Zucchini Casserole

To ensure your ground beef zucchini casserole turns out perfectly every time, keep these tips in mind.

  • Use lean ground beef: Choosing lean ground beef reduces excess grease in your casserole, keeping it healthier without sacrificing flavor.
  • Don’t overcook zucchini: Cook zucchini just until soft; overcooking can make it mushy and affect the texture of your dish.
  • Layer cheeses wisely: Mixing cheeses into the filling gives flavor depth while topping it with mozzarella creates a deliciously cheesy crust.
  • Season properly: Taste as you go! Adjust salt, pepper, and spices according to your preference to enhance the overall flavor.
  • Let it rest: Allowing the casserole to sit for 10 minutes after baking helps it set up, making serving easier.
  • Experiment with toppings: Try adding crushed red pepper flakes or different herbs for an extra kick and unique twist.

Best Side Dishes for Ground Beef Zucchini Casserole

Pairing side dishes with your ground beef zucchini casserole can elevate your meal. Here are some great options that complement its flavors well.

  1. Garlic Bread: Crispy and buttery, garlic bread makes a perfect accompaniment that everyone loves.
  2. Caesar Salad: A classic Caesar salad adds crunch and freshness, balancing out the richness of the casserole.
  3. Steamed Broccoli: Lightly steamed broccoli offers a nutritious side that’s simple yet effective.
  4. Roasted Brussels Sprouts: These add a caramelized flavor that pairs beautifully with the savory notes of the casserole.
  5. Coleslaw: A tangy coleslaw provides contrast in texture and flavor, making each bite exciting.
  6. Quinoa Salad: A light quinoa salad with lemon vinaigrette complements this hearty dish without overpowering it.
  7. Mixed Vegetables: Sautéed mixed vegetables offer additional nutrition while enhancing the comfort food vibe.
  8. Rice Pilaf: A fluffy rice pilaf with herbs can soak up any extra sauce from the casserole, adding another layer of flavor.

Common Mistakes to Avoid

Many cooks encounter challenges when making a ground beef zucchini casserole. By avoiding common mistakes, you can achieve a delicious dish that your family will love.

  • Using soggy zucchini: Make sure to cook the zucchini just enough to soften but not so much that it becomes mushy. Cooking covered for about 5 minutes is usually perfect.
  • Not draining excess fat: After cooking the ground beef, drain any excess fat to prevent the casserole from becoming greasy. This will keep your dish light and flavorful.
  • Skipping the seasoning: Don’t forget to season each layer of your casserole. Adding salt, pepper, and herbs at various stages enhances the overall flavor.
  • Ignoring cheese options: While mozzarella is traditional, experiment with different cheeses like cheddar or gouda for a unique twist. Mixing cheeses can elevate your casserole!
  • Overcooking the casserole: Baking for too long can dry out your dish. Keep an eye on it and broil briefly to achieve that golden cheese topping without sacrificing moisture.

Storage & Reheating Instructions

Refrigerator Storage

  • Store leftovers in an airtight container.
  • Ground beef zucchini casserole keeps well in the fridge for up to 3 days.

Freezing Ground Beef Zucchini Casserole

  • Allow the casserole to cool completely before freezing.
  • Use freezer-safe containers or wrap tightly in plastic wrap and aluminum foil. It lasts up to 3 months in the freezer.

Reheating Ground Beef Zucchini Casserole

  • Oven: Preheat to 350F, cover with foil, and heat for about 20-25 minutes until warmed through.
  • Microwave: Place in a microwave-safe dish, cover loosely, and heat on medium power for 2-3 minutes per serving.
  • Stovetop: Heat in a skillet over medium heat, stirring occasionally until warmed throughout.

Frequently Asked Questions

Can I use other ground meats in this Ground Beef Zucchini Casserole?

You can definitely substitute ground turkey or chicken for a leaner option. The flavors will still be delicious!

What can I add to enhance Ground Beef Zucchini Casserole?

Consider adding chopped bell peppers or spinach for extra veggies. They blend well and boost nutrition.

Is this casserole suitable for meal prep?

Absolutely! This dish makes great leftovers and freezes well, making it perfect for meal prepping.

Can I make Ground Beef Zucchini Casserole ahead of time?

Yes, you can assemble it a day in advance and bake it right before serving. Just adjust cooking time if it’s cold from the fridge.

How do I reheat leftovers of Ground Beef Zucchini Casserole?

Refer to our reheating instructions above for the best methods to enjoy your leftovers without losing flavor or texture!

Final Thoughts

This ground beef zucchini casserole is not only hearty but also versatile! You can easily customize it with different vegetables or cheeses based on what you have on hand. Give this recipe a try; it’s sure to become a family favorite!

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Ground Beef Zucchini Casserole

Ground Beef Zucchini Casserole


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  • Author: Aleena
  • Total Time: 55 minutes
  • Yield: Serves approximately 8 people 1x
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Description

Delight your family with this delicious Ground Beef Zucchini Casserole, a comforting dish that’s both hearty and nutritious. This recipe combines savory lean ground beef, fresh zucchinis, and creamy mozzarella to create a satisfying meal that everyone will love. Packed with protein and fresh veggies, it’s perfect for busy weeknights or casual gatherings. With easy preparation and customizable ingredients, this casserole is not only a great way to use up leftover vegetables but also an ideal option for meal prepping. Serve it straight from the oven or reheat leftovers for a quick lunch!


Ingredients

Scale
  • 1 cup cooked quinoa
  • 1 lb lean ground beef
  • 6 zucchinis, sliced
  • 1 cup cottage cheese
  • 2 cups low sugar tomato sauce
  • 3 cloves garlic, minced
  • 2 cups shredded mozzarella cheese

Instructions

  1. Preheat the oven to 375°F and grease a 9×13 inch casserole dish.
  2. Cook quinoa according to package instructions.
  3. In a large pan, heat olive oil over medium-high heat. Add ground beef, garlic, and onions; cook until meat is browned and onions are translucent. Drain excess fat.
  4. In the same pan, sauté zucchini with remaining olive oil until softened (about 5 minutes).
  5. Combine cooked beef, zucchini, cooked quinoa, tomato sauce, cottage cheese, and half of the mozzarella in the casserole dish; mix well.
  6. Top with remaining mozzarella and bake for about 30 minutes. Broil for an additional 5 minutes to brown the cheese if desired.
  7. Let rest for 10 minutes before serving.
  • Prep Time: 20 minutes
  • Cook Time: 35 minutes
  • Category: Dinner
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 330
  • Sugar: 4g
  • Sodium: 540mg
  • Fat: 18g
  • Saturated Fat: 8g
  • Unsaturated Fat: 9g
  • Trans Fat: 0g
  • Carbohydrates: 24g
  • Fiber: 4g
  • Protein: 22g
  • Cholesterol: 60mg

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