Your New Favorite Comfort Food: Ground Beef Zucchini Casserole

Hey there, friend! Anna here, waving from my flour-dusted kitchen counter. You know those nights when you crave something cozy, hearty, and unapologetically cheesy—but don’t want to babysit the stove? That’s exactly why I’m bubbling over with excitement to share this Ground Beef Zucchini Casserole with you today. Picture this: layers of tender zucchini hugging savory Italian-seasoned beef, juicy tomatoes, and a blanket of gooey mozzarella that turns golden and glorious in the oven. It’s the culinary equivalent of your favorite cozy sweater!

Whether you’re drowning in zucchini from your garden (we’ve all been there!) or just need a reliable weeknight win, this casserole is your secret weapon. It’s wholesome without feeling virtuous, effortless enough for busy Mondays, and guaranteed to make everyone at your table light up. I designed this recipe for real life—no fancy techniques, no obscure ingredients. Just pure, uncomplicated deliciousness that turns “What’s for dinner?” into “Can I have seconds?” So tie on that apron, crank up your favorite playlist, and let’s turn ordinary ingredients into something magical together!

Why This Casserole Feels Like Home

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Ground Beef Zucchini Casserole

Hearty, cheesy, and full of flavor—this Ground Beef Zucchini Casserole is the kind of comfort food that makes everyone ask for seconds. With layers of tender zucchini, seasoned beef, tomatoes, and melty mozzarella, it’s a wholesome, easy-to-make dinner the whole family will love.

  • Author: annareynolds
  • Prep Time: 15 min
  • Cook Time: 35 min
  • Total Time: 50mins
  • Yield: 6 1x

Ingredients

Scale

2 medium zucchinis (about 2 lbs), sliced
• 1 tbsp olive oil
• 1 small onion, diced
• 2 garlic cloves, minced
• 1 lb lean ground beef
• 2 tsp Italian seasoning
• ½ tsp kosher salt
• ½ tsp black pepper
• 1 (28 oz) can diced tomatoes, drained
• 2 cups shredded mozzarella cheese

Instructions

Preheat oven to 375°F (190°C).

In a large skillet, heat olive oil over medium heat. Sauté onion and garlic until soft, about 3 minutes.

Add ground beef, Italian seasoning, salt, and pepper. Cook until beef is browned.

Stir in drained tomatoes and cook for 2–3 minutes to blend flavors.

In a greased 9×13-inch baking dish, layer half the zucchini slices.

Spread half the beef mixture over the zucchini, then sprinkle with 1 cup mozzarella.

Repeat with remaining zucchini, beef, and top with the rest of the cheese.

Cover with foil and bake for 20 minutes. Remove foil and bake another 10–15 minutes until bubbly and golden.

Let rest 5–10 minutes before serving.

Nutrition

  • Calories: 310
  • Fat: 19g
  • Carbohydrates: 10g
  • Fiber: 2g
  • Protein: 27g

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This recipe? It’s woven right into the fabric of my family’s story. I’ll never forget the summer my kiddo planted his first garden. He was six, absolutely beaming with pride over his baseball-bat-sized zucchinis. (Toddler gardening goals, am I right?) But after weeks of zucchini bread and stir-fries, we were drowning in green squash! One rainy Tuesday, I threw ground beef, canned tomatoes, and our “zuke bounty” into a baking dish, crossed my fingers, and prayed for a miracle. What emerged was pure gold—steamy, cheesy, and packed with flavor. My skeptical husband took one bite, grinned, and declared, “This is a keeper!” Now, every time I make it, I see that little boy’s muddy hands proudly handing me his harvest. It’s proof that the best recipes aren’t just about ingredients—they’re love stories with a side of melted cheese.

Gather Your Flavor Heroes

Simple ingredients, big impact! Here’s what you’ll need (and my chef-y insights to make it shine):

  • 2 medium zucchinis (about 2 lbs), sliced – Look for firm, glossy skins! Insider tip: No need to peel—the skin adds color and nutrients. If your zucchini feels watery, sprinkle slices with salt, let sit 10 mins, then pat dry.
  • 1 tbsp olive oil – Extra virgin for fruity depth, but regular works too. Swap alert: Butter or avocado oil are delicious too!
  • 1 small onion, diced – Yellow or white onions add sweetness when sautéed. Chef’s hack: Freeze onions for 10 mins before chopping to avoid tears!
  • 2 garlic cloves, minced – Fresh is best! Substitution: ½ tsp garlic powder in a pinch.
  • 1 lb lean ground beef – 85-90% lean keeps it juicy without excess grease. Try this: Swap in ground turkey or Italian sausage for a twist!
  • 2 tsp Italian seasoning – Your flavor MVP! Insight: Rub it between your palms before adding—releases essential oils!
  • ½ tsp kosher salt + ½ tsp black pepper – Kosher salt blends better. Pro move: Season in layers—it builds flavor!
  • 1 (28 oz) can diced tomatoes, drained – Drain well to avoid a soggy casserole. Chef’s secret: Fire-roasted tomatoes add smoky magic!
  • 2 cups shredded mozzarella – Low-moisture shreds melt beautifully. Fun twist: Mix in provolone or parmesan for extra punch!

See? Nothing fussy! These pantry staples transform into pure comfort.

Let’s Build Your Flavor Masterpiece (Step-by-Step!)

Ready to create magic? Follow these easy steps—I’ll be right beside you with tips!

  1. Preheat oven to 375°F (190°C). Chef’s hack: Place your baking dish in the oven while preheating—it jumpstarts cooking!
  2. In a large skillet, heat olive oil over medium heat. Sauté onion and garlic until soft (about 3 mins). Don’t rush this! Golden onions = flavor foundation. Listen for the sizzle—that’s the sound of deliciousness starting!
  3. Add ground beef, Italian seasoning, salt, and pepper. Cook until beef is browned (5-7 mins). Break up clumps with a wooden spoon for even cooking. Pro tip: Drain excess fat if needed—your casserole will thank you!
  4. Stir in drained tomatoes and cook 2-3 mins. Let those flavors mingle! Insight: Taste now—adjust salt or herbs if needed.
  5. In a greased 9×13-inch baking dish, layer half the zucchini slices. Overlap slightly like shingles—it prevents gaps. No-stick secret: A quick olive oil spray works wonders!
  6. Spread half the beef mixture over zucchini, then sprinkle with 1 cup mozzarella. Cheese is your glue—spread it edge-to-edge!
  7. Repeat layers: remaining zucchini, beef, and top with remaining cheese. Chef’s confession: I always sneak extra cheese on top. No regrets!
  8. Cover with foil and bake 20 mins. Remove foil and bake another 10-15 mins until bubbly and golden. Watch closely: Your broiler on low for 1-2 mins gives that perfect crispy crown!
  9. Let rest 5-10 mins before serving. Patience pays: Resting lets layers set so it slices beautifully.

Smell that? That’s your kitchen smelling like a hug!

Serving Up the Cozy

Slide a big spoonful onto plates—watch that cheese stretch! I love serving this with a bright, crunchy side to balance the richness. Try a simple arugula salad with lemon vinaigrette or garlicky toasted sourdough. For a full comfort-food experience? Pair it with buttery mashed potatoes. Leftovers (if you have any!) taste even better tomorrow—just reheat gently in the oven to keep that crispy top.

Make It Your Own! Delicious Twists

This casserole is a blank canvas! Here are my favorite riffs:

  • Meat Swap: Use ground turkey, chicken, or spicy Italian sausage.
  • Veggie Boost: Add sliced mushrooms or bell peppers to the beef mix.
  • Cheese Party: Swap half the mozzarella for sharp cheddar or fontina.
  • Low-Carb Love: Skip layering—mix everything and bake! Or add cauliflower rice.
  • Spice It Up: Stir in red pepper flakes or a dash of hot sauce.

Anna’s Extra Kitchen Whispers

This recipe evolved from my “clean-out-the-fridge” experiments! Originally, I used cottage cheese instead of mozzarella (my grandma’s trick!), but my kids rebelled—hence the cheese avalanche. Funny story: Once, my dog snagged a zucchini slice mid-prep. I panicked, but he just gave me a “more, please?” look. Even pups approve! Over time, I learned that slicing zucchini ¼-inch thick is key—too thin, it vanishes; too thick, it stays crunchy. And if your garden overflows? Freeze sliced zucchini for winter casseroles—just thaw and pat dry before using. This dish isn’t just dinner; it’s a reminder that imperfection (like lopsided zucchini slices!) tastes delicious.

Your Questions, Answered!

Q: My casserole is watery! What did I do wrong?
A: Zucchini releases moisture as it cooks. Always drain canned tomatoes well, pat zucchini dry if it feels wet, and avoid overloading veggies. If it’s still soupy, bake uncovered longer (10-15 mins) to evaporate liquid.

Q: Can I prep this ahead?
A: Absolutely! Assemble the casserole (hold the final bake), cover, and refrigerate for up to 24 hours. Add 5-10 mins to baking time since it’s cold. You can also freeze it unbaked—thaw overnight in the fridge before baking.

Q: Why let it rest before cutting?
A: Resting allows the layers to “set.” Cutting too soon = cheesy landslide (tasty but messy!). Think of it as letting a cake cool—it ensures perfect slices.

Q: Can I use other squash?
A: Yes! Yellow squash or even thin eggplant slices work beautifully. Adjust baking time slightly if using denser veggies.

Nutritional Nibbles (Per Serving)

Approx. 310 calories | 19g fat | 10g carbs | 27g protein | 2g fiber
Note: Values are estimates. For precise counts, use your preferred calculator with exact brands.

Final Thoughts:

This Ground Beef Zucchini Casserole is more than just a clever way to use up garden zucchini—it’s comfort food with a fresh, wholesome twist. Whether you’re feeding a busy family on a weeknight or meal-prepping your lunches for the week, this cheesy, veggie-packed casserole delivers on flavor and practicality. It’s the kind of dish that feels like home, smells like comfort, and disappears faster than you can say “seconds, please!” So go ahead, scoop up that golden, bubbly goodness—you’ve earned it.

 

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