Cheesy Zucchini Lasagna
Cheesy Zucchini Lasagna is a cozy, lighter spin on the classic baked favorite — layers of tender zucchini, creamy ricotta, savory marinara, and gooey mozzarella that come together in a slow-cooked, hands-off comfort dish. It’s perfect for those nights when you want lasagna flavor without the noodles, and the crockpot keeps everything moist and melty. For more seasonal zucchini ideas, check out this easy zucchini recipes collection that pairs perfectly with this dish.
Why make this recipe
This version of zucchini lasagna is special because it combines the familiar, comforting profile of lasagna with a lighter, veggie-forward base — no layers of pasta required. The crockpot method makes it nearly impossible to overcook and delivers exceptionally tender zucchini and evenly melted cheeses. It’s a great way to use a zucchini bounty while still delivering satisfying, cheesy weeknight comfort.
Ingredients
- 3 medium zucchinis, sliced
- 2 cups marinara sauce
- 1 cup ricotta cheese
- 2 cups shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1 egg
- 1 teaspoon Italian seasoning
- Salt and pepper to taste
Step-by-Step Guide to Making Cheesy Zucchini Lasagna
This step-by-step approach walks you through each stage so you get consistently delicious results from your crockpot.
Prepare the ricotta mixture
- In a medium bowl, combine the ricotta cheese, egg, Italian seasoning, a pinch of salt, and freshly cracked black pepper. Mix until smooth and well combined. Taste and adjust the seasoning lightly — ricotta is mild, so a little salt helps the flavors sing.
Layer the crockpot
- Spoon a thin layer of marinara sauce onto the bottom of the crockpot to prevent sticking and to give the bottom layer flavor and moisture.
First zucchini layer
- Arrange a single layer of zucchini slices over the sauce. Overlapping slightly is fine, but try to keep the slices fairly flat so they cook uniformly.
Add the ricotta
- Dollop or spread a portion of the ricotta mixture over the zucchini layer. It doesn’t need to be perfectly even; the heat will help it distribute as it cooks.
Sprinkle mozzarella
- Scatter some shredded mozzarella over the ricotta. The mozzarella creates that melty, cheesy bridge between layers.
Repeat layers
- Continue alternating zucchini slices, ricotta mixture, and mozzarella until you’ve used all the ingredients. Aim to finish with a top layer of marinara and a generous sprinkling of mozzarella and the grated Parmesan cheese for a nice cheesy top.
Cook on low
- Set the crockpot to low and cook for 4–5 hours, or until the zucchini is tender and the cheeses are melted and bubbly. The exact time can vary slightly depending on your crockpot’s temperature, but the dish is quite forgiving.
Serve warm
- Scoop portions onto plates and serve immediately while the cheese is gooey. A light garnish of extra Parmesan, fresh basil, or a drizzle of olive oil elevates the presentation.

How to adapt these steps
- If your zucchini are particularly thick, consider slicing them thinner or giving them a quick pre-salt and rest (see tips below) to reduce extra moisture.
- For a crisper top, you can transfer the cooked lasagna to a baking dish and briefly broil the surface for 2–3 minutes, watching carefully so the cheese doesn’t burn.
Best Way to Store Cheesy Zucchini Lasagna
- Refrigerator: Store in an airtight container for 3–4 days at 4°C (40°F) or below.
- Freezer: Freeze portions in freezer-safe containers or tightly wrapped for up to 2–3 months at −18°C (0°F).
- Reheating: Thaw overnight in the refrigerator if frozen. Reheat in a 175°C (350°F) oven until warmed through (about 20–30 minutes for a single portion) or microwave in 1–2 minute bursts until hot, covering to retain moisture.
Serving Suggestions for Cheesy Zucchini Lasagna
- Serve with a crisp green salad dressed in lemon vinaigrette to cut through the richness of the cheeses and add a fresh contrast.
- A side of garlic-roasted broccoli or steamed green beans complements the zucchini and adds a hearty vegetable component.
- For a more indulgent meal, offer crusty bread or garlic bread to mop up any remaining sauce.
- Top individual servings with fresh basil leaves, extra grated Parmesan, or a pinch of red pepper flakes for brightness and a little heat.
Tips to make Cheesy Zucchini Lasagna
- Use evenly sliced zucchini: Aim for slices about 1/8–1/4 inch thick so they cook consistently in the crockpot.
- Keep moisture in check: If your zucchinis are very watery, salt them lightly and let them sit on a rack or paper towels for 15–20 minutes, then pat dry before layering.
- Avoid overfilling the crockpot: Give the top cheese a little space to melt and breathe; a tightly packed crockpot can take longer to heat through.
- Choose a sturdy marinara: A thicker, low-moisture marinara helps prevent the dish from becoming soupy.
- Let it rest: After cooking, allow the lasagna to sit for 10 minutes before serving so the layers set slightly and portions hold together better.
Variations
- Vegetarian boost (bullet): Add a layer of sautéed mushrooms, spinach, or chopped bell peppers between the zucchini and ricotta to deepen flavor and increase vegetable volume without changing the cooking method.
- Protein-rich alternative (paragraph): For a heartier meal, brown and season 1/2 to 1 pound of ground turkey or Italian sausage, drain excess fat, and layer it between the zucchini and ricotta. This keeps the method the same while turning the dish into a more substantial, protein-forward entrée.
FAQs
Q: How do I keep the lasagna from becoming watery?
A: Use firm zucchinis, slice them evenly, and if they seem very moist, lightly salt and drain them before assembling. Also choose a thicker marinara sauce.
Q: Can I use a different cheese instead of ricotta?
A: Yes — cottage cheese (blended smooth) or a mixture of mascarpone and a small amount of Greek yogurt can be used as ricotta substitutes if you prefer.
What if I don’t have a crockpot?
- You can assemble this in a baking dish and bake at 180°C (350°F) for 30–40 minutes until the zucchini is tender and the cheese is melted; cover with foil for the first 20–25 minutes to keep moisture in, then remove foil to brown the top.
Common quick FAQs (bullet list):
- How long to cook if assembled cold? Add 15–30 minutes to the crockpot time if ingredients are chilled.
- Can this be made ahead? Yes — assemble and refrigerate for up to 24 hours before cooking, or cook and reheat.
- Is this keto-friendly? With no noodles, it’s lower in carbs than traditional lasagna; check sauce sugar if following strict keto.
Q: Can I slice zucchini using a mandoline?
A: Yes, a mandoline helps create uniform slices, but use caution and a guard to protect your fingers.
Final notes on troubleshooting
- If the top is browned but center is cool, lower the crockpot temperature and allow more time, or transfer to an oven to finish in a covered dish.
- If the texture is too loose when serving, let the leftovers chill in the refrigerator and the juices will firm up, making reheated slices more cohesive.
Conclusion
This Cheesy Zucchini Lasagna delivers familiar lasagna flavors with fewer carbs and a fresher vegetable base, and the crockpot method makes it an ideal, low-effort weeknight favorite. For a step-by-step photo-driven alternative and tips on selecting zucchini for lasagna, see Best Zucchini Lasagna Recipe – How to Make Zucchini Lasagna. If you’re worried about watery zucchini lasagna and want troubleshooting advice and a tested method to avoid excess moisture, check The Best Zucchini Lasagna (Delicious and Not Watery) – A Simple ….

Cheesy Zucchini Lasagna
- Total Time: 315 minutes
- Yield: 6 servings 1x
- Diet: Vegetarian
Description
A cozy, lighter spin on classic lasagna made with tender zucchini, creamy ricotta, savory marinara, and gooey mozzarella, all cooked in a crockpot.
Ingredients
- 3 medium zucchinis, sliced
- 2 cups marinara sauce
- 1 cup ricotta cheese
- 2 cups shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1 egg
- 1 teaspoon Italian seasoning
- Salt and pepper to taste
Instructions
- In a medium bowl, combine ricotta cheese, egg, Italian seasoning, salt, and pepper. Mix until smooth and well combined.
- Spoon a thin layer of marinara sauce onto the bottom of the crockpot.
- Arrange a layer of zucchini slices over the sauce.
- Dollop a portion of the ricotta mixture over the zucchini layer.
- Scatter shredded mozzarella over the ricotta.
- Continue layering zucchini, ricotta, and mozzarella until ingredients are used up. Finish with marinara and a sprinkle of mozzarella and Parmesan.
- Set the crockpot to low and cook for 240-300 minutes, or until zucchini is tender and cheeses are melted.
- Serve warm, garnished with Parmesan and basil if desired.
Notes
For a crisper top, transfer the cooked lasagna to a baking dish and broil for 2-3 minutes. Store leftovers in an airtight container for 3-4 days.
- Prep Time: 15 minutes
- Cook Time: 300 minutes
- Category: Main Course
- Method: Crockpot
- Cuisine: Italian
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sugar: 6g
- Sodium: 500mg
- Fat: 17g
- Saturated Fat: 8g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 3g
- Protein: 18g
- Cholesterol: 50mg
Keywords: zucchini, lasagna, crockpot, vegetarian, comfort food






