This zucchini hamburger casserole is a hearty, cheesy family dinner made with seasoned ground beef, tender zucchini, tomato sauce, and melted cheese. It has the comforting flavor of a classic beef casserole while adding plenty of vegetables and avoiding traditional pasta.groundbeefrecipes
Why You’ll Love It
- Easy to assemble on a busy weeknight.
- Uses affordable everyday ingredients.
- Combines protein and vegetables in one dish.
- Naturally low-carb when served without bread or rice.
- Great for meal prep and leftovers.
- Easy to customize with different cheeses and vegetables.
Ingredients
- 1 tablespoon olive oil.
- 1 pound ground beef.
- 1 small yellow onion, diced.
- 2 garlic cloves, minced.
- 2 medium zucchini, sliced into thin rounds.
- 12 ounces pasta sauce.
- 1 cup cottage cheese.
- 1 cup shredded mozzarella cheese.
- ½ cup grated Parmesan cheese.
- ½ teaspoon Italian seasoning.
- Salt and black pepper, to taste.
Instructions
Prepare the zucchini
Preheat the oven to 350°F.
Slice the zucchini into thin, even rounds. If the zucchini is particularly watery, sprinkle the slices lightly with salt and let them sit for 10–15 minutes.
Pat the zucchini dry with paper towels. This helps prevent excess moisture from collecting in the casserole.
Brown the beef
Heat the olive oil in a large skillet over medium-high heat.
Add the diced onion and ground beef. Break the meat apart with a spoon and cook until the beef is browned and no longer pink, about 5–7 minutes.
Add the garlic and cook for another 30 seconds.
Drain excess grease if necessary.
Make the filling
Stir the pasta sauce and cottage cheese into the beef mixture. Add the Italian seasoning, salt, and black pepper.
Cook for 3–4 minutes, stirring occasionally, until the mixture is hot and well combined.
Assemble the casserole
Lightly grease an 8×8-inch or 9×13-inch baking dish.
Spread half of the beef mixture over the bottom of the dish.
Arrange half of the zucchini slices over the beef. Sprinkle half of the mozzarella cheese on top.
Repeat with the remaining beef mixture and zucchini slices.
Finish with the remaining mozzarella and Parmesan cheese.
Bake
Bake uncovered for 25–30 minutes, until the casserole is bubbling and the cheese is melted and lightly browned.
Let it rest for approximately 10 minutes before serving. Resting allows the juices to thicken and makes the casserole easier to portion.
Recipe Tips
- Use lean ground beef to reduce excess grease.
- Drain the beef thoroughly if using a higher-fat blend.
- Pat the zucchini dry before layering.
- Slice the zucchini evenly so it cooks at the same rate.
- Use a thick pasta sauce for the best consistency.
- Let the casserole rest before serving.
- For a crispier top, broil the casserole for 1–2 minutes at the end.
Ingredient Variations
Use another ground meat
Ground turkey, chicken, pork, sausage, venison, or lamb can replace the beef.
Change the cheese
Use cheddar, Monterey Jack, provolone, fontina, or an Italian cheese blend instead of mozzarella.
Add vegetables
Sautéed mushrooms, bell peppers, spinach, eggplant, or yellow squash can be added to the beef mixture.
Add more herbs
Fresh basil, parsley, oregano, or red pepper flakes can add extra flavor.
Make it creamier
Replace the cottage cheese with ricotta cheese or add a few tablespoons of cream cheese to the sauce.
Serving Suggestions
Serve zucchini hamburger casserole with:
- A green salad.
- Garlic bread.
- Roasted broccoli.
- Steamed green beans.
- Cauliflower rice.
- A tomato and cucumber salad.
- Fresh basil and extra Parmesan.
For a lower-carb meal, serve it with salad or roasted vegetables instead of bread or pasta.
Make-Ahead Instructions
Prepare the beef mixture and slice the zucchini up to 1 day ahead.
Store the components separately in the refrigerator, then assemble and bake when ready.
You can also assemble the entire casserole, cover it, and refrigerate it for several hours. Add approximately 5–10 minutes to the baking time if baking directly from the refrigerator.
Storage and Reheating
Store leftovers in an airtight container in the refrigerator for up to 3–4 days.
Reheat individual portions in the microwave, or warm the casserole in a covered baking dish at 350°F until heated through.
Freezing is not recommended because zucchini can release excess water and become soft after thawing.
Frequently Asked Questions
Can I use a larger baking dish?
Yes. A 9×13-inch dish works well, but the casserole will be shallower and may cook slightly faster.
How do I keep the casserole from becoming watery?
Salt and pat the zucchini dry before assembling. Use thick pasta sauce, avoid overcooking the zucchini, and let the casserole rest before serving.
Can I use tomato sauce instead of pasta sauce?
Yes. Season plain tomato sauce with garlic, Italian herbs, salt, and pepper.
Can I make this casserole without cottage cheese?
Yes. Replace it with ricotta, cream cheese, or additional shredded mozzarella.
Is zucchini hamburger casserole keto-friendly?
This version may fit a low-carbohydrate meal plan, but the total carbohydrates depend on the pasta sauce and cottage cheese. Choose a low-sugar sauce and check the nutrition label for accurate tracking.
Nutrition Information
Nutrition will vary depending on the ground beef, cheese, pasta sauce, cottage cheese, and serving size used.
For a lighter version, choose lean ground beef, reduced-fat cottage cheese, and part-skim mozzarella. For a lower-carbohydrate version, use a low-sugar pasta sauce and serve the casserole without bread or rice.
