If you’re looking for a comfort food meal that still fits a high-protein, low-carb lifestyle, this ground beef zucchini casserole is exactly what you need. It has all the cozy, cheesy vibes of a classic baked dish but without the heaviness of pasta or carbs.
The zucchini layers soak up the rich, seasoned beef and tomato sauce, while the melted cheese on top brings everything together into one satisfying bite. It’s hearty enough to keep you full, but light enough that you don’t feel weighed down after.
This is one of those recipes that works perfectly for weeknights, meal prep, or even feeding a crowd. Simple ingredients, big flavor, and easy to customize.
Look at the Recipe
- Cheesy, baked comfort food without the carbs
- High-protein and filling
- Perfect for meal prep and family dinners
Ingredients Needed
1 lb (450g) ground beef
3 medium zucchinis, sliced into thin rounds
1 small onion, finely chopped
3 cloves garlic, minced
1 can (14 oz) crushed tomatoes
2 tablespoons tomato paste
1 teaspoon dried oregano
1 teaspoon dried basil
½ teaspoon paprika
Salt and black pepper to taste
1 cup shredded mozzarella cheese
½ cup grated Parmesan cheese
2 tablespoons olive oil
Optional: ½ teaspoon chili flakes
Optional: fresh parsley or basil
How to Make Our Ground Beef Zucchini Casserole
Step 1: Prep
Preheat oven to 375°F (190°C).
Slice zucchini, chop onion, and mince garlic.
Step 2: Cook the Beef
Heat 1 tbsp olive oil in a skillet.
Sauté onion for 2–3 minutes, then add garlic.
Add ground beef and cook until browned (6–8 minutes).
Drain excess fat if needed.
Step 3: Make the Sauce
Stir in crushed tomatoes and tomato paste.
Add oregano, basil, paprika, salt, pepper, and chili flakes.
Simmer for 5–7 minutes until slightly thickened.
Step 4: Pre-Cook Zucchini
In another pan, sauté zucchini slices in remaining olive oil for 3–5 minutes.
(This prevents a watery casserole.)
Step 5: Assemble
In a greased baking dish:
- Layer meat sauce
- Add zucchini layer
- Repeat layers
Finish with mozzarella and Parmesan on top.
Step 6: Bake
Bake for 25–30 minutes until cheese is melted and bubbly.
Optional: Broil 2–3 minutes for a golden top.
Step 7: Rest & Serve
Let rest for 5–10 minutes before serving.
Garnish with fresh herbs if desired.
Storage & Serving Suggestions
- Store in fridge for up to 4 days
- Freeze for up to 2 months
- Reheat in oven or microwave
- Serve with a fresh salad or garlic yogurt dip
Tips & FAQs
How do I avoid watery casserole?
Pre-cook zucchini or salt it and pat dry.
Can I use ground turkey?
Yes, for a leaner version.
Can I make it keto?
It already is low-carb and keto-friendly.
Can I add more veggies?
Yes, mushrooms or spinach work great.
