Zucchini Ground Beef Casserole

Why You’ll Love This Recipe

This casserole brings together the wholesome freshness of zucchini with the rich, meaty flavor of ground beef for a delicious, balanced meal. It’s incredibly easy to prepare, budget-friendly, and a great way to sneak more vegetables into your meals. Whether you’re eating low-carb or just want a lighter twist on classic casseroles, this dish checks all the boxes.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

• Ground beef

• Zucchini

• Onion

• Garlic

• Shredded cheddar cheese

• Mozzarella cheese

• Olive oil

• Tomato sauce

• Italian seasoning

• Salt

• Black pepper

Directions

1. Preheat your oven to 375°F (190°C).

2. In a large skillet over medium heat, add olive oil and sauté chopped onion and garlic until fragrant.

3. Add the ground beef and cook until browned. Drain excess fat.

4. Stir in tomato sauce, Italian seasoning, salt, and pepper. Let simmer for a few minutes.

5. Slice the zucchini into thin rounds.

6. In a greased casserole dish, layer half of the zucchini, followed by half the meat mixture and a layer of shredded cheese. Repeat layers.

7. Top with mozzarella cheese.

8. Cover with foil and bake for 25 minutes. Remove foil and bake for an additional 10–15 minutes, or until cheese is bubbly and golden.

9. Let the casserole rest for 5–10 minutes before serving.

Servings and timing

This recipe makes approximately 6 servings.
Prep time: 15 minutes
Cook time: 40 minutes
Total time: 55 minutes

Variations

• Spicy Kick: Add crushed red pepper flakes or diced jalapeños for heat.

• Vegetarian Version: Replace ground beef with plant-based meat or lentils.

• Creamy Texture: Add a layer of ricotta or cream cheese for extra creaminess.

• Extra Veggies: Include mushrooms, bell peppers, or spinach for more vegetables.

• Different Cheeses: Try using pepper jack or gouda for a flavor twist.

Storage/Reheating

Store leftover casserole in an airtight container in the refrigerator for up to 4 days.
To reheat, warm individual portions in the microwave for 1–2 minutes, or reheat in a 350°F oven for 10–15 minutes until heated through.
For longer storage, freeze portions in freezer-safe containers for up to 2 months. Thaw in the fridge overnight before reheating.

FAQs

What kind of ground beef should I use?

Lean ground beef (80–90% lean) is ideal for reducing excess grease while still keeping flavor.

Can I make this casserole ahead of time?

Yes, assemble the casserole and refrigerate it up to 24 hours before baking.

How do I keep the casserole from getting watery?

Salt the zucchini slices and let them sit for 10–15 minutes, then blot with paper towels before layering to reduce moisture.

Can I use ground turkey instead?

Absolutely, ground turkey or chicken can be used as a lighter alternative to beef.

Is this casserole low-carb or keto-friendly?

Yes, it’s naturally low in carbs and suitable for a keto diet, especially when using sugar-free tomato sauce.

Can I add pasta or rice to this dish?

Yes, but it will no longer be low-carb. Add cooked pasta or rice in layers for a heartier version.

What’s the best way to slice zucchini for this recipe?

Thin, even slices work best. You can use a mandoline for consistent thickness.

What size baking dish should I use?

An 8×8 or 9×13-inch casserole dish works well depending on how thick you want your layers.

Can I freeze this casserole before baking?

Yes, assemble the casserole and freeze it unbaked. Thaw overnight in the fridge before baking as directed.

Conclusion

Zucchini Ground Beef Casserole is a wholesome, delicious, and versatile dish that’s perfect for any night of the week. Whether you’re looking for a comforting low-carb meal or simply want to try a new way to enjoy zucchini, this recipe delivers both flavor and nutrition in every bite.

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