Italian Oven-Baked Zucchini Parmesan

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Layered zucchini slices baked with tomato sauce and mozzarella cheese for a comforting vegetarian Italian casserole. This italian-inspired vegetarian (vegetarian) ready in about 50 minutes pairs olive oil, marinara sauce, shredded mozzarella cheese for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 35 min Serves 4 Italian cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F. Lightly grease a 9x9-inch baking dish with 1 tbsp olive oil.
  2. Step 2: Heat remaining 1 tbsp olive oil in a skillet over medium heat. Add 2 minced garlic cloves and sauté for 30 seconds until fragrant.
  3. Step 3: Add 3 cups marinara sauce to the skillet along with 1 tsp dried oregano, 1/2 tsp salt, and 1/4 tsp black pepper. Simmer for 5 minutes to meld flavors.
  4. Step 4: In the baking dish, spread a thin layer of sauce. Arrange a single layer of 3 sliced medium zucchini rounds (1/4-inch thick) over the sauce.
  5. Step 5: Spoon more sauce over the zucchini and sprinkle with 1/2 cup shredded mozzarella and 2 tbsp grated Parmesan.
  6. Step 6: Repeat layering zucchini, sauce, mozzarella (1/2 cup), and Parmesan (1/2 cup) until all ingredients are used, finishing with cheese on top.
  7. Step 7: Cover with foil and bake for 25 minutes. Remove foil and bake an additional 10 minutes until cheese is bubbly and golden.
  8. Step 8: Let cool for 5 minutes, then garnish with 1/4 cup chopped fresh basil leaves before serving.

Equipment for this recipe

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Frequently asked questions

How long does Italian Oven-Baked Zucchini Parmesan take to make?

Total time is about 50 minutes (15 min prep + 35 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Italian Oven-Baked Zucchini Parmesan?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep olive oil from drying out.

Can I substitute ingredients in Italian Oven-Baked Zucchini Parmesan?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Italian Oven-Baked Zucchini Parmesan for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Italian Oven-Baked Zucchini Parmesan vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.