Meta Info
Servings: 6
Total Time: 50 minutes
Difficulty: Easy
Calories per Serving: Approximately 290
Macros per Serving:
Protein: 24g | Carbs: 8g | Fat: 18g | Fiber: 2g
Intro Paragraph
This Low-Carb Zucchini Beef Casserole is a hearty, family-friendly dinner that delivers all the comfort of a traditional casserole without the extra carbohydrates. Layers of tender zucchini, seasoned ground beef, and melted cheese create a satisfying meal that’s perfect for busy weeknights.
Packed with protein and vegetables, this healthy casserole is ideal for anyone following a low-carb, clean-eating, or weight-management lifestyle. The zucchini becomes tender while absorbing the rich flavors of the savory beef and cheesy topping.
If you’re searching for low-carb dinner recipes, healthy casserole ideas, or easy meal prep dinners, this zucchini beef casserole is a delicious solution that doesn’t sacrifice flavor.
Look at the Recipe
- Tender zucchini layered with savory seasoned beef
- Golden, bubbly cheese topping with rich comfort-food flavor
- Low-carb, high-protein, and perfect for meal prep
Ingredients Needed
For the Casserole
- 3 medium zucchini, thinly sliced
- 1 pound lean ground beef
- 1 small onion, diced
- 2 cloves garlic, minced
- 1 cup marinara sauce (low-sugar if preferred)
- 1½ cups shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- 1 teaspoon Italian seasoning
- ½ teaspoon salt
- ¼ teaspoon black pepper
Optional Add-Ins
- Mushrooms, sliced
- Chopped spinach
- Red pepper flakes
- Fresh basil
How to Make Our Low-Carb Zucchini Beef Casserole
1. Prepare the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9-inch baking dish.
2. Cook the Beef
In a large skillet, brown the ground beef over medium heat.
Add the onion and cook until softened.
Stir in the garlic, Italian seasoning, salt, and pepper.
3. Add the Sauce
Pour in the marinara sauce and simmer for 5 minutes.
Remove from heat.
4. Layer the Casserole
Arrange a layer of zucchini slices in the baking dish.
Spread half of the beef mixture over the zucchini.
Sprinkle with some mozzarella cheese.
Repeat the layers until all ingredients are used.
Finish with the remaining mozzarella and Parmesan cheese.
5. Bake Until Bubbly
Bake uncovered for 30–35 minutes or until the cheese is golden and bubbling.
6. Rest Before Serving
Allow the casserole to rest for 10 minutes before serving to help the layers set.
Storage & Serving Suggestions
Storing
Store leftovers in an airtight container in the refrigerator for up to 4 days.
Reheating
Warm in the microwave or oven until heated through.
Freezing
Freeze fully cooled portions for up to 2 months.
Serving Pairings
Serve with:
- Mixed green salad
- Roasted broccoli
- Garlic green beans
- Cauliflower rice
- Cucumber salad
Tips & FAQs
How do I prevent a watery casserole?
Lightly salt the zucchini slices and let them sit for 15 minutes before assembling. Pat dry with paper towels.
Can I use ground turkey instead of beef?
Yes. Ground turkey or ground chicken work wonderfully as lighter alternatives.
Is this casserole keto-friendly?
It can fit into many low-carb meal plans when using a low-sugar marinara sauce.
Can I make it ahead of time?
Absolutely. Assemble the casserole up to 24 hours ahead and refrigerate until ready to bake.
What other cheeses work well?
Cheddar, provolone, Monterey Jack, or an Italian cheese blend are excellent options.
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