
The Ultimate Comfort Food: Easy Cheesy Zucchini Casserole
Hey there, kitchen friends! Emily Walker here, apron dusted with breadcrumbs and cheese under my fingernails (a chef’s badge of honor, right?). If you’ve ever stared at a mountain of summer zucchini wondering, “What magic can I whip up tonight?”—I’ve got your back. Picture this: tender zucchini swimming in a creamy, garlicky cheddar hug, topped with that irresistible golden crunch. No fancy techniques, no weird ingredients—just pure, unapologetic comfort in one dish. This Easy Cheesy Zucchini Casserole is my weeknight superhero, rescuing busy cooks since 2018! Whether you’re drowning in garden zucchini or just craving something cozy, this recipe turns humble veggies into the star of the table. And trust me—I’ve seen veggie skeptics sneak third helpings. Ready to make magic? Grab that baking dish, and let’s get cheesy!
Grandma’s Garden & My First Kitchen Win
This recipe? It’s pure nostalgia for me. Picture 10-year-old me, barefoot in Grandma Ruth’s Ohio garden, hunting zucchini like treasure. She’d wink and say, “Emmy Lou, these green beauties are blank canvases!” One sweltering August, her zucchini plants went wild. We hauled armfuls into her tiny kitchen, and she taught me her “clean-out-the-fridge” casserole trick—mayo for creaminess, eggs for binding, and whatever cheese was lurking in the icebox. I remember burning the first batch (teenage distraction!), but that crispy-edged second try? Pure triumph. Grandma’s secret? “Don’t fuss, just mix!” Now, every time I bake this, I smell her lavender apron and hear her chuckle when the cheese bubbles. It’s more than a recipe—it’s my edible hug from her.

Easy Cheesy Zucchini Casserole
Your Simple, Soul-Satisfying Ingredients
Gather these goodies—most are pantry staples! Pro tip: Zucchinis release water, so don’t skip salting if they’re extra juicy (toss diced pieces with 1 tsp salt, wait 10 mins, then squeeze dry).
- 4 cups zucchini, 1-inch dice – Chef insight: Skip the seeds if they’re giant! Sub yellow squash or add corn for confetti color.
- 1 cup mayonnaise – Sub tip: Greek yogurt works, but mayo gives that unbeatable creamy richness. Vegan mayo? Go for it!
- 1 cup shredded cheddar – Flavor boost: Gruyère or pepper jack add fun twists. Pre-shredded works, but block cheese melts smoother.
- 2 eggs, slightly beaten – Binding magic! For vegan, flax eggs (2 tbsp ground flax + 5 tbsp water, wait 10 mins).
- 1 tsp black pepper – Chef’s tweak: Freshly cracked adds a floral punch.
- ¾–1 tsp garlic powder – Why powder? It disperses evenly without burning. Roasted garlic paste? Yes, please!
- ¼ cup panko breadcrumbs – Crunch factor: Gluten-free panko or crushed crackers work great.
- 1 tbsp melted butter – Golden trick: Olive oil or bacon drippings add personality.
Let’s Build That Cheesy Dream!
Don’t worry—I’ve got your back with pro hacks. This is foolproof!
- Preheat oven to 350°F (175°C). Lightly grease an 8×8-inch dish. → Chef hack: Use butter wrappers for greasing—zero waste!
- Mix zucchini, mayo, cheddar, eggs, pepper, and garlic powder. → Watch me: Fold gently! Overmixing makes it dense. See those streaks of mayo? Perfect.
- Pour into dish and smooth the top. → Tip: Bang the dish gently on the counter to remove air pockets.
- Combine panko and melted butter. → Crunch upgrade: Add a pinch of smoked paprika or Parmesan!
- Sprinkle breadcrumbs evenly. → Pro move: Sprinkle from high up for better coverage.
- Bake 35–40 mins until golden and bubbly. → Don’t peek! Wait for that glorious jiggle-free center.
- Cool 10 minutes. → Patience, grasshopper: This lets the custard set for perfect slices.
Serving Up the Cozy
Slide that golden beauty onto the table straight from the oven—the oohs and aahs are free! I serve it family-style in the baking dish with a big wooden spoon. Pair with simply grilled chicken or lemony shrimp for protein punch, or go full comfort with garlic bread. Garnish? A sprinkle of fresh chives or parsley cuts the richness. Leftovers (ha!) reheat like a dream—just cover with foil and warm at 325°F. Breakfast bonus: Fry a cold slice in butter until crispy. You’re welcome!
Shake It Up! 5 Delicious Twists
This casserole is your playground! Try these riffs:
- Meat Lover’s: Fold in ½ cup cooked bacon or crumbled sausage.
- Garden Bounty: Add ½ cup corn, diced bell peppers, or cherry tomatoes.
- Keto-Friendly: Swap panko for crushed pork rinds + Parmesan.
- Italian Vibes: Use mozzarella, add 1 tsp Italian herbs, and sub marinara for ¼ cup mayo.
- Spicy Southwest: Mix in diced green chiles and top with jalapeño slices.
From My Kitchen to Yours
This recipe evolved from my “kitchen sink” days as a broke culinary student! Originally, I used cream of mushroom soup (shh!), but mayo creates silkiness without canned soup gloopy-ness. Funny story: Once, I mistook cayenne for paprika—let’s just say we needed extra lemonade! Over time, I learned zucchini size matters: smaller ones = sweeter, denser casserole. And that breadcrumb top? Inspired by my dad’s obsession with fried onion strings—I swapped them for panko to keep it crunchy but light. Make it yours—that’s the joy!
Your Questions, My Answers!
Q: Why is my casserole watery?
A: Zucchinis are 95% water! Salt diced pieces, wait 10 mins, then squeeze dry in a towel. Also, avoid over-stirring after baking.
Q: Can I make this ahead?
A: Absolutely! Assemble (without topping), cover, and refrigerate overnight. Add breadcrumbs right before baking—add 5 extra mins.
Q: Help! Mine didn’t brown on top.
A: Move the dish to the oven’s top rack for the last 5-7 mins. If still pale, broil 60 seconds—watch closely!
Q: Can I freeze leftovers?
A: Yes! Freeze slices on a tray, then bag them. Reheat at 350°F covered until warm (about 20 mins). Texture stays creamy!
Nutritional Per Serving (approx.)
Calories: 290 • Fat: 25g • Carbs: 6g • Fiber: 1g • Protein: 8g • Sodium: 380mg
Note: Using low-fat mayo reduces calories to 240/serving. Add 1g protein if using Greek yogurt.

Easy Cheesy Zucchini Casserole
- Total Time: 50 minutes
- Yield: 6 1x
Description
This golden-topped, ultra-creamy zucchini casserole is comfort food made simple. Packed with tender zucchini, gooey cheddar, and just the right crunch on top, it’s the kind of dish that makes even veggie skeptics go back for seconds. One bowl, a handful of ingredients, and dinner is on the table.
Ingredients
4 cups zucchini, diced into 1-inch pieces
1 cup mayonnaise
1 cup shredded cheddar cheese
2 eggs, slightly beaten
1 tsp black pepper
¾ – 1 tsp garlic powder (to taste)
¼ cup panko breadcrumbs
1 tbsp butter, melted
Instructions
Preheat oven to 350°F (175°C). Lightly grease an 8×8-inch baking dish.
In a large bowl, mix zucchini, mayonnaise, cheddar cheese, eggs, pepper, and garlic powder until well combined.
Pour mixture into the baking dish and smooth the top.
In a small bowl, mix panko breadcrumbs with melted butter.
Sprinkle breadcrumb mixture evenly over the casserole.
Bake for 35–40 minutes, until golden and bubbly.
Let cool slightly before serving for the best texture.
- Prep Time: 10 minutes
- Cook Time: 35 - 40
Nutrition
- Calories: 290 per serving
- Sodium: 380mg per serving
- Fat: 25g per serving
- Carbohydrates: 6g per serving
- Fiber: 1g per serving
- Protein: 8g per serving
Final Thoughts
If comfort had a casserole form, this Easy Cheesy Zucchini Casserole would be it. It’s cozy, creamy, a little crunchy on top, and completely soul-satisfying—like wrapping your taste buds in a warm blanket. Whether you’re trying to use up a garden bounty or just looking for a weeknight win that doesn’t involve 20 ingredients and three pans, this dish delivers every single time.
What I love most? It’s a recipe that welcomes creativity. Add bacon, sneak in extra veggies, swap the cheese—make it your own. It’s flexible, forgiving, and absolutely fabulous, just like Grandma Ruth taught me. And hey, even if you burn the first batch or mix up your paprika and cayenne (been there!), you’ll come out smiling on the other side—with a spoonful of cheesy joy in hand.
So go ahead, give that zucchini the glow-up it deserves. Your kitchen’s about to smell amazing.
Stay cozy, stay creative,
– Emily Walker