Hey there, food lovers! Are you craving a hearty, comforting meal that’s also surprisingly healthy and easy to make? Then look no further than this ultimate Ground Beef Zucchini Casserole! This isn’t your grandma’s zucchini bread – oh no, this is something far more satisfying. Imagine biting into a warm, cheesy casserole brimming with savory ground beef, tender zucchini, and a delightful blend of herbs and spices. The texture is simply divine – a perfect balance of tender zucchini, juicy ground beef, and a wonderfully creamy sauce that holds everything together beautifully. It’s the kind of dish that warms your soul on a chilly evening and leaves you feeling completely satisfied without the guilt.
What makes this recipe truly special is its versatility. It’s quick to assemble, perfect for busy weeknights when you want a delicious meal on the table without spending hours in the kitchen. Plus, it’s naturally packed with vegetables, making it a guilt-free indulgence that the whole family will adore. The rich, savory flavors of the ground beef blend seamlessly with the subtle sweetness of the zucchini, creating a harmonious taste sensation that’s both familiar and exciting. You’ll find yourself craving this comforting casserole time and again.
This isn’t just a meal; it’s an experience. Picture this: The aroma of simmering beef and herbs filling your kitchen, the happy chatter of family gathered around the table, the satisfying crunch of the casserole’s topping, and the comforting feeling of a truly delicious, homemade dinner. It’s the kind of meal that evokes feelings of warmth, family, and pure culinary joy. Seriously, you’re going to love this Ground Beef Zucchini Casserole!

What You’ll Need
Let’s gather those ingredients! Don’t worry, this recipe is incredibly straightforward. You probably already have most of these items in your pantry and fridge.
- 1 lb ground beef: The star of the show! Lean ground beef works best for a healthier option.
- 2 medium zucchini: Shredded, these add moisture and a subtle sweetness.
- 1 medium onion: Diced, for added flavor and texture.
- 2 cloves garlic: Minced, for that aromatic punch.
- 1 (15 ounce) can diced tomatoes: Undrained, adding juicy tomato flavor.
- 1 (10.75 ounce) can condensed cream of mushroom soup: The creamy base of our casserole.
- 1/2 cup shredded cheddar cheese: For that glorious cheesy topping!
- 1/4 cup chopped fresh parsley: Adds a bright, fresh flavor.
- 1 teaspoon dried oregano: A touch of Italian herbs for depth.
- Salt and pepper: To taste, always essential!
- 1/2 cup bread crumbs: For a crunchy topping (optional, but recommended!).
Step-by-Step Instructions
Let’s get cooking! This recipe is incredibly simple to follow, even for beginner cooks.
- Preheat & Prep: Preheat your oven to 375°F (190°C). Grease a 9×13 inch baking dish. While the oven preheats, shred your zucchini using a box grater or food processor. This helps it cook evenly and release excess moisture.
- Brown the Beef: In a large skillet over medium-high heat, brown the ground beef, breaking it up with a spoon. Drain off any excess grease. Tip: For even browning, don’t overcrowd the pan. Work in batches if needed.
- Sauté Aromatics: Add the diced onion and minced garlic to the skillet and sauté until softened, about 3-5 minutes. Tip: A little bit of olive oil can help prevent sticking.
- Combine Ingredients: Stir in the shredded zucchini, diced tomatoes (undrained), cream of mushroom soup, oregano, salt, and pepper. Mix well to combine all the flavors.
- Assemble the Casserole: Pour the mixture into the prepared baking dish. Sprinkle the shredded cheddar cheese evenly over the top. If using, top with bread crumbs for extra crunch.
- Bake: Bake for 30-35 minutes, or until bubbly and heated through. The cheese should be melted and golden brown. Tip: Check for doneness after 30 minutes; every oven varies!
- Rest & Serve: Let the casserole rest for a few minutes before serving. Garnish with fresh parsley, if desired. Serve hot and enjoy!
Tips for Success
Here are a few tricks to ensure your Ground Beef Zucchini Casserole turns out perfectly every time:
- Don’t overcook the zucchini: Overcooked zucchini can become mushy. Aim for tender-crisp.
- Drain excess grease from the beef: This helps prevent a greasy casserole.
- Use fresh herbs if possible: Fresh herbs offer a superior flavor compared to dried herbs.
- Adjust seasonings to your taste: Feel free to add more or less salt, pepper, or oregano to suit your preferences.
- For a crispier top: Broil the casserole for the last 2-3 minutes of baking.
Variations to Try
This recipe is incredibly versatile. Here are some delicious variations to explore:
- Spicy Kick: Add a pinch of red pepper flakes or a dash of your favorite hot sauce to the mixture.
- Cheesy Upgrade: Experiment with different cheeses, such as Monterey Jack, pepper jack, or a Mexican blend.
- Vegetarian Version: Substitute the ground beef with crumbled vegetarian ground meat, lentils, or beans.
- Gluten-Free Option: Use gluten-free bread crumbs or omit them altogether.
- Add-ins: Get creative with additions! Consider bell peppers, mushrooms, corn, or black beans.

Storing and Reheating
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To freeze, let the casserole cool completely, then wrap it tightly in plastic wrap and aluminum foil. Freeze for up to 2 months. To reheat, thaw overnight in the refrigerator and then reheat in a 350°F (175°C) oven until heated through, or microwave in 30-second intervals until heated. For best results, reheat gently to prevent drying out. The texture and taste will be best within a few days.
Frequently Asked Questions
Here are some answers to common questions about this Ground Beef Zucchini Casserole recipe:
- Q: Can I use frozen zucchini? A: Yes, but make sure to thaw and squeeze out excess moisture before adding it to the casserole. Frozen zucchini tends to release more water than fresh.
- Q: Can I substitute the cream of mushroom soup? A: Yes, you can use cream of chicken soup, cream of celery soup, or even make your own creamy sauce using milk or cream, flour, and your preferred seasonings.
- Q: How long does the casserole last in the refrigerator? A: Leftovers should be stored in an airtight container and consumed within 3 days for optimal quality and safety.
- Q: Can I make this casserole ahead of time? A: Yes, you can assemble the casserole completely (except the bread crumbs and final cheese topping), cover, and refrigerate overnight. Bake as directed, adding the bread crumbs and cheese during the last 15-20 minutes of baking.
The Final Word
This Ground Beef Zucchini Casserole is a true winner! It’s easy to make, incredibly flavorful, and satisfyingly hearty. The combination of juicy ground beef, tender zucchini, and creamy sauce creates a dish that’s both comforting and delicious. It’s the perfect weeknight meal or a crowd-pleasing addition to your next potluck. So, give this recipe a try and let us know what you think! Leave a comment below, rate the recipe, and share your photos with us – we’d love to see your culinary creations! Happy cooking!

Ground Beef Zucchini Casserole
Equipment
- 9×13 inch baking dish Or similar sized oven-safe dish
Ingredients
Meat and Vegetables
- 1 lb Ground beef 80/20 blend recommended
- 3 medium Zucchini Chopped
- 1 medium Onion Chopped
Sauce and Topping
- 1 can Tomato sauce 15 ounces
- 1 cup Shredded cheddar cheese
- 1 tsp Dried oregano
- 1 tsp Garlic powder
Instructions
- Preheat oven to 375°F (190°C).
- Brown the ground beef in a large skillet over medium-high heat; drain excess fat.
- Add the chopped onion and zucchini to the skillet and cook until softened, about 5-7 minutes.
- Stir in the tomato sauce, oregano, and garlic powder. Season with salt and pepper to taste.
- Pour the beef and vegetable mixture into the prepared baking dish.
- Sprinkle the shredded cheddar cheese over the top.
- Bake for 30-40 minutes, or until bubbly and heated through.
- Let cool slightly before serving.