Old-Fashioned Shredded Zucchini Casserole
A comforting family favorite made with fresh zucchini, savory cheeses, and simple pantry ingredients. This old-fashioned zucchini casserole is soft, cheesy, and beautifully golden on top, making it the perfect side dish for weeknight dinners, holiday meals, or summer gatherings when zucchini is in abundance.
Why You’ll Love This Recipe
- Easy to prepare with everyday ingredients
- A delicious way to use fresh garden zucchini
- Rich, cheesy, and full of comforting flavor
- Perfect as a side dish or light vegetarian main course
- Great for meal prep and leftovers
Recipe Information
Prep Time: 15 minutes
Cook Time: 40 minutes
Total Time: 55 minutes
Servings: 6
Difficulty: Easy
Ingredients
- 4 medium zucchini, shredded
- 1 medium onion, finely chopped
- 2 large eggs, lightly beaten
- 1 cup shredded mozzarella cheese
- ½ cup freshly grated Parmesan cheese
- ½ cup biscuit baking mix or all-purpose flour
- 2 tablespoons unsalted butter, melted
- 1 teaspoon Italian seasoning
- ½ teaspoon salt, or to taste
- ¼ teaspoon freshly ground black pepper
Optional Garnishes
- Chopped fresh parsley
- Extra grated Parmesan
- Cracked black pepper
Instructions
Step 1: Prepare the Oven
Preheat your oven to 350°F (175°C). Lightly grease a 9-inch baking dish or an 8×8-inch casserole dish with butter or nonstick cooking spray.
Step 2: Prepare the Zucchini
Wash the zucchini and shred it using the large holes of a box grater or a food processor.
Transfer the shredded zucchini to a clean kitchen towel or several layers of paper towels. Squeeze firmly to remove as much moisture as possible. This step is essential for preventing a watery casserole.
Step 3: Mix the Ingredients
In a large mixing bowl, combine:
- Shredded zucchini
- Chopped onion
- Eggs
- Mozzarella cheese
- Parmesan cheese
- Biscuit mix (or flour)
- Melted butter
- Italian seasoning
- Salt
- Black pepper
Mix until all ingredients are evenly incorporated.
Step 4: Assemble
Spread the mixture evenly into the prepared baking dish. Smooth the top with a spatula for even baking.
Step 5: Bake
Bake for 35–40 minutes, or until the casserole is cooked through and the top is lightly golden brown. The center should be set and no longer jiggly.
Step 6: Rest and Serve
Allow the casserole to cool for 5–10 minutes before slicing. Garnish with fresh parsley or extra Parmesan if desired, then serve warm.
Chef’s Tips
- Remove as much liquid as possible from the zucchini for the best texture.
- Freshly grated Parmesan provides the richest flavor.
- Add a pinch of red pepper flakes for a subtle kick.
- For a crispier top, broil the casserole for 2–3 minutes after baking.
Variations
Cheddar Version: Replace the mozzarella with sharp cheddar cheese.
Herb Garden Style: Add fresh basil, thyme, or chives for extra freshness.
Protein Boost: Stir in cooked bacon, diced ham, or shredded rotisserie chicken.
Gluten-Free: Use a gluten-free baking mix instead of regular biscuit mix.
What to Serve With
This casserole pairs wonderfully with:
- Grilled chicken
- Roast beef
- Pork chops
- Baked salmon
- Fresh garden salad
- Garlic bread
Storage
Store leftovers in an airtight container in the refrigerator for up to 4 days.
Freezing
Wrap the fully cooled casserole tightly or transfer portions to freezer-safe containers. Freeze for up to 2 months. Thaw overnight in the refrigerator before reheating.
Reheating
- Oven: Bake at 350°F for 10–15 minutes until heated through.
- Microwave: Heat individual portions for 1–2 minutes.
Estimated Nutrition (Per Serving)
- Calories: 210
- Protein: 12g
- Carbohydrates: 10g
- Fat: 14g
- Saturated Fat: 7g
- Fiber: 2g
- Sugar: 3g
- Sodium: 390mg
Nutrition values are estimates and may vary depending on the specific ingredients used.
Frequently Asked Questions
Can I make this casserole ahead of time?
Yes. Assemble the casserole up to one day in advance, cover, and refrigerate. Bake just before serving.
Do I have to squeeze the zucchini?
Yes. Removing excess moisture helps the casserole bake properly and prevents a watery texture.
Can I use frozen zucchini?
Yes. Thaw it completely and squeeze out as much liquid as possible before mixing it with the remaining ingredients.
Can I add other vegetables?
Absolutely. Mushrooms, spinach, bell peppers, or corn make excellent additions.
Final Thoughts
This Old-Fashioned Shredded Zucchini Casserole is a timeless comfort food that’s simple to prepare and packed with cheesy, savory goodness. Whether you’re using fresh garden zucchini or looking for an easy family side dish, this recipe delivers delicious results every time.