Cheesy Baked Zucchini Casserole

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Cheesy Baked Zucchini Casserole: Your New Favorite Comfort Food Hack

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Cheesy Baked Zucchini Casserole

This golden, bubbly casserole is a tribute to late-summer harvests and the joy of comfort food made from what’s on hand. With three cheeses, tender zucchini, and a hint of garlic, it’s the perfect way to turn simple ingredients into a dish the whole table will ask for again.

  • Author: Mason Hartman
  • Prep Time: 15 mins
  • Cook Time: 35 mins
  • Total Time: 50 minutes

Ingredients

Scale

4 cups shredded zucchini (about 3.5 medium zucchinis)

½ tsp salt

½ cup finely chopped or shredded onion

1 tbsp finely chopped garlic (about 3 cloves)

2 large eggs

½ cup grated Parmesan cheese (plus 2 tbsp for topping)

1 cup shredded mozzarella cheese

½ cup shredded cheddar cheese

½ cup panko breadcrumbs

2 tbsp melted salted butter

Instructions

Preheat oven to 375°F (190°C). Grease a medium baking dish.

Place shredded zucchini in a colander, sprinkle with salt, and let sit 10 minutes. Squeeze out excess moisture.

In a large bowl, mix zucchini, onion, garlic, eggs, all cheeses (reserve 2 tbsp Parmesan), and panko.

Stir in melted butter until well combined.

Pour mixture into prepared dish. Smooth the top and sprinkle with remaining Parmesan.

Bake for 30–35 minutes or until golden and set. Let cool 5 minutes before serving.

Notes

Cheesy, crispy-edged, and veggie-packed—this is zucchini like you’ve never had it before!

Nutrition

  • Calories: ~220

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Hey friends, Mason here! Let’s talk about that moment when your garden (or farmer’s market haul) suddenly looks like a zucchini jungle. You know the drill—one day they’re cute little spears, the next they’re veggie giants threatening to take over your fridge. That’s exactly when this Cheesy Baked Zucchini Casserole swoops in like a crispy, golden superhero. Imagine tender zucchini shreds hugging three kinds of cheese, all baked until the edges get that irresistible crunch while the center stays gloriously creamy. No fancy skills needed, just big flavors and even bigger comfort. This dish is my love letter to simple summer abundance—the kind that turns “What do I do with all this zucchini?!” into “Can you pass me thirds?” Whether you’re wrangling post-work chaos or feeding your favorite crowd, this casserole’s got your back. So grab that grater and let’s transform humble veggies into something truly unforgettable. Trust me, your fork’s gonna thank you.

Why this recipe slaps: It’s sneakily veggie-packed (shhh!), ready in under an hour, and tastes like a cozy hug. Plus, that crispy Parmesan-panko top? *Chef’s kiss*. Let’s get bubbling!

Zucchini Lessons from Grandma’s Counter

Picture this: 8-year-old me, standing on a wobbly stool in Grandma Dot’s kitchen, zucchini juice up to my elbows. She’d hand me this ancient metal grater and point at a mountain of green squash with a wink: “Make yourself useful, kiddo.” I’d shred like my life depended on it while she told stories about Depression-era cooking—how nothing went to waste, especially not zucchini “the size of a baseball bat.” Her secret? Squeeze every drop of water out, or you’ll end up with “soup pretending to be casserole.” We’d layer those dry shreds with whatever cheese was in her fridge (usually cheddar ends and parm dust), crack eggs straight from the coop, and top it with crushed saltines. That first bite? Pure magic. The way the cheese pulled into strings, the crispy edges giving way to tender zucchini… It tasted like love and resourcefulness. This recipe’s my modern spin on her genius—swapping saltines for panko crunch and adding garlic because obviously, but the heart’s the same. Every time I make it, I swear I smell her rosewater perfume.

Gather Your Flavor Players

Here’s what you’ll need (and why each one matters):

  • 4 cups shredded zucchini (about 3.5 medium)Pro tip: Smaller zucchinis = sweeter flavor! Use the large bois only if you’ve squeezed ’em like a stress ball.
  • ½ tsp salt – Not just for flavor! This pulls water from zucchini so your casserole doesn’t weep.
  • ½ cup finely chopped onion – Yellow or sweet work best. Swap with 1 tsp onion powder in a pinch.
  • 1 tbsp chopped garlic (about 3 cloves) – Fresh is fire, but 1 tsp garlic powder works too.
  • 2 large eggs – Your binder brigade! Room temp blends smoother.
  • ½ cup grated Parmesan + 2 tbsp reserved – The salty MVP. Grana Padano subs beautifully.
  • 1 cup shredded mozzarella – Melty goodness! Low-moisture works best—skip fresh.
  • ½ cup shredded cheddar – Sharpness for balance. Gouda or pepper jack are fun swaps!
  • ½ cup panko breadcrumbs – Secret crunch weapon. Gluten-free? Use crushed pork rinds or almond flour.
  • 2 tbsp melted salted butter – For that golden crust. Olive oil works, but butter = flavor town.

Ingredient hack: Pre-shred your cheeses! Store-bought works fine, but grate your own for superior meltiness (anti-caking agents in pre-shredded can make things grainy).

Let’s Build Some Cheesy Magic

Ready for the easiest casserole ever? Follow these steps:

  1. Preheat & Prep: Crank that oven to 375°F (190°C). Grease your favorite 9×9″ or 2-quart baking dish—butter, oil, or non-stick spray all work. Why this temp? Hot enough for browning, gentle enough to cook eggs evenly.
  2. Zucchini Spa Day: Shred zucchinis (no need to peel!). Toss with salt in a colander over the sink. Let it sit 10 minutes. NOW, squeeze like you’re wringing out a wet towel! Get aggressive—you’ll remove ¼+ cup water. Chef’s secret: Use a clean kitchen towel for max pressure. Soggy zucchini = sad casserole.
  3. Mix It Up: In a large bowl, combine squeezed zucchini, onion, garlic, eggs, all cheeses (except reserved 2 tbsp Parmesan), and panko. Drizzle melted butter over everything. Mix with your hands—it’s therapeutic! Watch for: Even distribution. No eggy pockets!
  4. Butter Makes It Better: Stir melted butter into the mix until fully incorporated. Butter = flavor glue + golden crust enabler.
  5. Bake to Glory: Pour into your greased dish. Smooth the top—press gently so it bakes evenly. Sprinkle reserved Parmesan over the top. Bake 30-35 minutes until deeply golden and set (no jiggle in the center!). Pro move: Broil 1-2 minutes at the end for extra crunch (watch closely!).
  6. Rest is Best: Let it cool 5 minutes before slicing. This lets the eggs fully set so you get clean cuts. Patience, grasshopper!

How to Serve It Like a Pro

Slide that golden beauty onto the table family-style—rustic charm wins! I love it in a colorful ceramic dish to show off the crispy top. Pair with:

  • 🪴 Fresh vibes: A bright lemony arugula salad cuts the richness.
  • 🍗 Protein pals: Grilled chicken, lemon-herb shrimp, or garlicky white beans.
  • 🍞 Carb comfort: Crusty bread to swipe up every cheesy crumb. Garlic bread? Yes, please!

Garnish game: Fresh basil ribbons, cracked black pepper, or a drizzle of chili oil for the adventurous!

Shake It Up: 5 Delicious Twists

Make this casserole your own with these riffs:

  1. Meat Lover’s: Fold in ½ cup cooked crumbled bacon, Italian sausage, or diced ham.
  2. Mediterranean Mood: Add ¼ cup chopped sun-dried tomatoes + 2 tbsp chopped Kalamata olives. Swap cheddar for feta!
  3. Spicy Kick: Mix in 1 diced jalapeño (seeds removed) + ½ tsp smoked paprika. Top with pickled red onions.
  4. Keto-Friendly: Replace panko with ¼ cup crushed pork rinds or almond flour. Use full-fat cheeses.
  5. Garden Harvest: Add ½ cup shredded carrots or yellow squash with the zucchini.

Mason’s Kitchen Confessions

Okay, real talk: The first time I made this, I didn’t squeeze the zucchini enough. It was like cheesy soup with identity issues. Lesson learned! Now I channel Grandma Dot’s “squeeze like you mean it” energy. Over time, I’ve tweaked the cheese ratios—more mozz for stretch, less cheddar so it doesn’t overpower. And that garlic? Originally one clove. My taste buds staged a rebellion. Three’s the sweet spot! Funny story: My nephew once mistook the raw mixture for cookie dough (bless his heart). Safe to say he learned a valuable lesson about tasting pre-baked eggs… and now he’s hooked on the final product. This dish evolves with every summer—last year’s obsession was adding lemon zest. Make it yours!

Your Zucchini Casserole Questions, Solved!

Q: My casserole turned out watery! What did I do wrong?
A: Squeezing is non-negotiable! Salt draws water out, but you gotta press hard after draining. Also, avoid giant overripe zucchinis—they’re water bombs. If it’s still soggy, bake 5-10 mins longer uncovered.

Q: Can I make this ahead?
A: Absolutely! Assemble (unbaked) up to 24 hours ahead. Cover and fridge. Add 5-8 mins to bake time since it’s cold. Leftovers reheat beautifully in the air fryer!

Q: Help! I’m out of panko. Substitutes?
A: Crushed crackers (Ritz or saltines), regular breadcrumbs, or even crushed cornflakes work. For gluten-free, try almond flour or crushed pork rinds.

Q: Why three cheeses? Can I use just one?
A: Each cheese brings magic: Parm for salty umami, mozz for meltiness, cheddar for tang. Using just mozz will taste flat. In a pinch, do mozz + extra parm!

Nutritional Info (Per Serving)

Servings: 6 | Prep: 15 mins | Cook: 35 mins
Calories: ~220 | Protein: 12g | Carbs: 9g | Fat: 15g
Note: Values are estimates. For lower fat, reduce cheese by ⅓ and add ¼ cup nutritional yeast.

Final Thoughts

If you’re staring down a mountain of zucchini and wondering how on earth to make a dent, this Cheesy Baked Zucchini Casserole is your answer. It’s the kind of dish that feels like a cozy hug—simple ingredients, big flavor, and that magical balance of creamy and crispy that keeps you going back for “just one more bite.” Whether you’re feeding your family, impressing the neighbors at a potluck, or just treating yourself after a long day, this casserole’s got your back. So grab that grater, channel your inner Grandma Dot, and let’s turn humble zucchini into something truly crave-worthy. I can’t wait for you to taste it—your fork’s gonna thank you!

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