Zucchini Casserole with Ground Beef

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This hearty Zucchini Casserole with Ground Beef is the kind of cozy, weeknight comfort food that comes together with simple pantry staples and plenty of fresh zucchini. Tender layers of zucchini are baked with a savory beef and tomato mixture, melty cheddar, and a crunchy breadcrumb topping for a balanced, family‑friendly meal that’s satisfying without being too heavy.

Ingredients

  • 4 medium zucchinis, sliced into 1/4-inch rounds
  • 1 pound (450 g) ground beef
  • 1 medium onion, chopped
  • 2 cloves garlic, minced
  • 1 can (14.5 oz / 410 g) diced tomatoes, drained
  • 1 cup shredded cheddar cheese, divided
  • 1 cup breadcrumbs
  • 1 teaspoon Italian seasoning
  • Salt, to taste
  • Freshly ground black pepper, to taste
  • 2 tablespoons olive oil, plus more for greasing the baking dish
  • Fresh parsley, chopped, for garnish (optional)

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch (23×33 cm) baking dish with a bit of olive oil or nonstick spray.
  2. Prepare the vegetables by slicing the zucchinis into 1/4-inch rounds and chopping the onion. Mince the garlic and set everything aside.
  3. Heat 2 tablespoons olive oil in a large skillet over medium heat. Add the chopped onion and minced garlic, sautéing for 2–3 minutes until the onion is softened and translucent, stirring often so the garlic doesn’t burn.
  4. Add the ground beef to the skillet, breaking it apart with a spoon or spatula. Cook for 5–7 minutes, until the beef is browned and no pink remains. Drain off excess fat if necessary.
  5. Stir in the drained diced tomatoes, Italian seasoning, salt, and pepper. Let the mixture cook for another 2–3 minutes to allow the flavors to meld and most of the liquid to evaporate slightly. Taste and adjust seasoning if needed, then remove from heat.
  6. Layer half of the sliced zucchini evenly over the bottom of the prepared baking dish. Sprinkle lightly with a pinch of salt and pepper.
  7. Spoon half of the beef mixture over the zucchini, spreading it into an even layer. Sprinkle with half of the shredded cheddar cheese.
  8. Repeat the layers with the remaining zucchini, the rest of the beef mixture, and the remaining cheese on top.
  9. Sprinkle the breadcrumbs evenly over the surface of the casserole, covering the cheese. For extra color and crunch, drizzle or mist a little olive oil over the breadcrumbs.
  10. Cover the baking dish tightly with aluminum foil and bake for 25 minutes, until the zucchini begins to soften and the casserole is heated through.
  11. Remove the foil and bake for an additional 10–15 minutes, or until the cheese is bubbly and the breadcrumb topping is golden brown.
  12. Let the casserole rest for 5–10 minutes before slicing. Garnish with chopped fresh parsley if desired, then serve warm.

Variation

  1. Swap the beef: Use ground turkey, chicken, or Italian sausage in place of ground beef for a lighter or more flavorful twist.
  2. Make it low-carb: Replace the breadcrumbs with crushed pork rinds, almond flour, or a mixture of grated Parmesan and herbs for a low-carb topping.
  3. Add more veggies: Layer in sliced mushrooms, bell peppers, or baby spinach with the zucchini for extra color and nutrition.

Cooking Notes

  1. If you prefer very tender zucchini, slice it slightly thinner and add 5 extra minutes of covered baking time before removing the foil.
  2. For a deeper, richer flavor, let the beef and tomato mixture simmer for an extra 5 minutes to concentrate the sauce before layering.
  3. If the top is browning too quickly, loosely tent the casserole with foil for the last 5–10 minutes of baking.

Serving Suggestions

  1. Serve with a simple green salad dressed with lemon and olive oil to balance the richness of the casserole.
  2. Pair with crusty bread or garlic toast to soak up the savory juices from the pan.
  3. Offer a side of steamed green beans or roasted carrots for a full, family-style dinner spread.

Tips

  • Cut the zucchini slices as evenly as possible so they cook at the same rate and the casserole bakes uniformly.
  • Brown the beef well to develop flavor don’t rush this step, and let it get a bit caramelized before adding the tomatoes.
  • Letting the casserole rest before serving helps it set slightly, making it easier to slice neatly and serve clean portions.

Prep Time

  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Total Time: 55 minutes

Nutritional Information (Per Serving)

  • Calories: 320 kcal
  • Protein: 21 g
  • Sodium: 520 mg

Frequently Asked Questions

  1. Can I make this zucchini casserole ahead of time?
    Yes. Assemble the casserole up to the breadcrumb topping, cover tightly, and refrigerate for up to 24 hours. When ready to bake, add a few extra minutes of covered baking time since it will be starting cold.
  2. Can I freeze this casserole?
    You can freeze it after baking and cooling completely. Wrap well and freeze for up to 2 months. Reheat, covered, at 350°F (175°C) until hot in the center. Note that the zucchini may be a bit softer after freezing.
  3. How do I keep the casserole from getting watery?
    Drain the tomatoes very well, slice the zucchini no thinner than 1/4 inch, and avoid overbaking. You can also pre-salt and pat dry the zucchini if it’s especially watery.
  4. Can I use a different cheese?
    Absolutely. Mozzarella, Monterey Jack, or a blend of cheddar and Parmesan all work nicely; just make sure it’s a good melting cheese.

Conclusion

This Zucchini Casserole with Ground Beef is a cozy, crowd-pleasing bake that layers tender zucchini, savory beef, and melty cheese under a crunchy breadcrumb topping. It’s simple enough for busy weeknights yet comforting enough to serve to guests, and a delicious way to turn humble ingredients into a hearty, satisfying meal.

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Zucchini Casserole with Ground Beef

  • Author: Avery
  • Total Time: 55 minutes
  • Yield: 6 servings 1x
  • Diet: Omnivore
Print Recipe

Description

This hearty Zucchini Casserole with Ground Beef is the kind of cozy, weeknight comfort food that comes together with simple pantry staples and plenty of fresh zucchini. Tender layers of zucchini are baked with a savory beef and tomato mixture, melty cheddar, and a crunchy breadcrumb topping for a balanced, family‑friendly meal that’s satisfying without being too heavy.

Ingredients

Scale
  • 4 medium zucchinis, sliced into 1/4-inch rounds
  • 1 pound (450 g) ground beef
  • 1 medium onion, chopped
  • 2 cloves garlic, minced
  • 1 can (14.5 oz / 410 g) diced tomatoes, drained
  • 1 cup shredded cheddar cheese, divided
  • 1 cup breadcrumbs
  • 1 teaspoon Italian seasoning
  • Salt, to taste
  • Freshly ground black pepper, to taste
  • 2 tablespoons olive oil, plus more for greasing the baking dish
  • Fresh parsley, chopped, for garnish (optional)

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch (23×33 cm) baking dish with a bit of olive oil or nonstick spray.
  2. Prepare the vegetables by slicing the zucchinis into 1/4-inch rounds and chopping the onion. Mince the garlic and set everything aside.
  3. Heat 2 tablespoons olive oil in a large skillet over medium heat. Add the chopped onion and minced garlic, sautéing for 2–3 minutes until the onion is softened and translucent, stirring often so the garlic doesn’t burn.
  4. Add the ground beef to the skillet, breaking it apart with a spoon or spatula. Cook for 5–7 minutes, until the beef is browned and no pink remains. Drain off excess fat if necessary.
  5. Stir in the drained diced tomatoes, Italian seasoning, salt, and pepper. Let the mixture cook for another 2–3 minutes to allow the flavors to meld and most of the liquid to evaporate slightly. Taste and adjust seasoning if needed, then remove from heat.
  6. Layer half of the sliced zucchini evenly over the bottom of the prepared baking dish. Sprinkle lightly with a pinch of salt and pepper.
  7. Spoon half of the beef mixture over the zucchini, spreading it into an even layer. Sprinkle with half of the shredded cheddar cheese.
  8. Repeat the layers with the remaining zucchini, the rest of the beef mixture, and the remaining cheese on top.
  9. Sprinkle the breadcrumbs evenly over the surface of the casserole, covering the cheese. For extra color and crunch, drizzle or mist a little olive oil over the breadcrumbs.
  10. Cover the baking dish tightly with aluminum foil and bake for 25 minutes, until the zucchini begins to soften and the casserole is heated through.
  11. Remove the foil and bake for an additional 10–15 minutes, or until the cheese is bubbly and the breadcrumb topping is golden brown.
  12. Let the casserole rest for 5–10 minutes before slicing. Garnish with chopped fresh parsley if desired, then serve warm.

Notes

  • To keep the casserole from getting watery, make sure the diced tomatoes are very well drained, and don’t slice the zucchini too thinly.
  • If your zucchini is extra juicy, you can sprinkle the slices lightly with salt, let them sit 10 minutes, then pat dry before layering.
  • Use freshly shredded cheddar for the best melt and flavor; pre-shredded cheese can be coated with anti-caking agents that affect texture.
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Category: Main Course, Casserole
  • Method: Baked
  • Cuisine: American, Comfort Food

Nutrition

  • Serving Size: 1/6 of casserole
  • Calories: 320 kcal
  • Sugar: 6 g
  • Sodium: 520 mg
  • Fat: 18 g
  • Saturated Fat: 7 g
  • Unsaturated Fat: 10 g
  • Trans Fat: 0 g
  • Carbohydrates: 19 g
  • Fiber: 3 g
  • Protein: 21 g
  • Cholesterol: 70 mg

Keywords: zucchini casserole with ground beef, cheesy zucchini bake, ground beef zucchini recipe, easy weeknight casserole, low carb friendly dinner

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