If you love the comforting flavors of a classic cheeseburger but want a healthier twist, this Cheeseburger Casserole with Spaghetti Squash Recipe is your new best friend in the kitchen. Combining the rich, savory taste of ground turkey with the light, slightly sweet strands of spaghetti squash, this casserole is a delightful balance of indulgence and nutrition. It’s a fantastic crowd-pleaser that feels like a warm hug on a plate, perfect for family dinners or meal prepping for the week ahead. Trust me, once you try this recipe, you’ll wonder how you ever lived without it!

Ingredients You’ll Need
Simple yet essential, these ingredients come together to create incredible layers of flavor, texture, and color that make this casserole truly special. Every component plays its part, from the sweetness of the spaghetti squash to the tangy zing of pickles, making this dish a well-rounded sensation.
- 950g cooked spaghetti squash: Offers a low-carb noodle alternative with a naturally mild, slightly sweet flavor.
- 1 tablespoon olive oil: Adds richness and helps soften the onions for a soulful base.
- ½ yellow onion, diced: Brings a subtle sweetness and depth when cooked.
- 1 lb ground turkey (93/7 lean): Provides lean protein and a mild flavor; can substitute with ground beef for a richer taste.
- 1 teaspoon salt: Enhances all the natural flavors in the dish.
- ½ teaspoon black pepper: Adds a gentle warmth and spice.
- 2 cloves garlic, minced: Offers aromatic intensity that complements the meat perfectly.
- ½ cup ketchup: Infuses classic cheeseburger sweetness and tang.
- ¼ cup mustard: Delivers a sharp zip to balance the richness.
- ¼ cup nonfat plain Greek yogurt: Adds creaminess while keeping it light and healthy.
- ½ cup chopped pickles: Imparts a satisfying crunch and vinegary pop reminiscent of a cheeseburger topping.
- 1 cup shredded lite cheddar cheese, divided: Melts beautifully, creating that irresistible gooey finish.
- 3 large eggs: Bind everything together and give the casserole a firm, sliceable texture.
How to Make Cheeseburger Casserole with Spaghetti Squash Recipe
Step 1: Prepare Your Spaghetti Squash
First, preheat your oven to 400°F (200°C) and grease a 9×9 inch baking dish to prevent sticking. Cook the spaghetti squash however you prefer—it could be roasted whole, halved, or even microwaved for convenience. Once tender, shred the flesh with a fork until it resembles delicate noodles. This naturally gluten-free base brings a subtle sweetness and wonderful texture to the casserole.
Step 2: Cook the Flavorful Ground Turkey Mixture
Heat olive oil in a skillet over medium-high heat and add the diced onion. Cook until softened and fragrant, about 3 to 4 minutes. Stir in ground turkey, salt, black pepper, and minced garlic. Brown the meat until crumbled and cooked through, allowing the spices and garlic to infuse every bite with irresistible savory goodness.
Step 3: Mix the Key Components Together
In a large bowl, combine the cooked spaghetti squash, browned turkey mixture, ketchup, mustard, Greek yogurt, and chopped pickles. This combination cleverly mimics the classic cheeseburger flavor profile while keeping the dish light and fresh. The chopped pickles add that iconic crunch and tang which makes this casserole extra special.
Step 4: Bind with Eggs and Cheese
Whisk the eggs in a separate bowl until smooth and then add half of the shredded cheddar cheese into the spaghetti squash mixture. Stir thoroughly before pouring the whisked eggs into the bowl, folding everything together to ensure an even, flavorful distribution. The eggs work as the perfect binder, and the cheese adds creaminess and that true cheeseburger character.
Step 5: Bake to Perfection
Transfer the entire mixture into the prepared baking dish, smoothing the top evenly. Sprinkle the remaining cheddar cheese over the surface. Bake the casserole in the preheated oven for one hour or until it is set firmly and golden brown on top. This wait is well worth it for the bubbling, cheesy goodness you’ll soon enjoy.
Step 6: Cool and Serve
Once baked, allow the casserole to cool for about 15 minutes before serving. This resting time helps it to solidify so that each slice holds its shape nicely. Plus, you don’t want to burn your mouth and missing out on the full flavor experience!
How to Serve Cheeseburger Casserole with Spaghetti Squash Recipe

Garnishes
Garnishing your casserole elevates the presentation and adds fresh, complementary flavors. Think chopped fresh parsley or green onions for a burst of color and brightness. A dollop of extra Greek yogurt or a drizzle of ketchup can also make each bite pop with cheeseburger nostalgia.
Side Dishes
This casserole pairs wonderfully with crisp salads like a garden mix with a tangy vinaigrette to balance the richness. For a more indulgent touch, roasted vegetables or garlic mashed potatoes can round out the plate beautifully. All these options help make your meal satisfying without stealing the spotlight from the star dish.
Creative Ways to Present
Try serving this casserole in individual ramekins for a charming personal touch, making it perfect for dinner parties. You can also top portions with extra shredded cheese and briefly broil for a golden crust. Another fun idea is layering it in a glass casserole dish so guests can appreciate all those enticing layers before digging in.
Make Ahead and Storage
Storing Leftovers
Leftover cheeseburger casserole stores beautifully in an airtight container in the refrigerator for up to 4 days. This makes it a fantastic option for quick lunches or dinners during busy weekdays. Just be sure to cool it completely before refrigerating to keep the texture intact.
Freezing
If you want to prep in advance or save some for later, this casserole freezes really well. Wrap it tightly with plastic wrap and then aluminum foil to prevent freezer burn. It’s best consumed within 2 months for maximum flavor and quality.
Reheating
To reheat, place individual slices on a microwave-safe plate and heat in 1 to 2-minute increments until hot throughout. Oven reheating at 350°F (175°C) wrapped loosely with foil for 15 to 20 minutes also works well, ensuring the casserole stays moist and flavorful.
FAQs
Can I use ground beef instead of ground turkey?
Absolutely! Ground beef adds a richer, more traditional cheeseburger flavor. Just choose lean ground beef (like 85% lean) for a good balance of taste and fat.
Is spaghetti squash the best alternative for pasta in this casserole?
Yes, spaghetti squash is perfect here because it mimics noodles while keeping the dish lower in carbs and gluten-free. Its mild flavor lets the cheeseburger elements shine.
Can I make this recipe dairy-free?
You can substitute the cheddar cheese with a dairy-free cheese alternative and swap Greek yogurt for a coconut or cashew-based yogurt. It might change the texture slightly but still taste delicious.
How long does this casserole keep in the fridge?
When stored properly in an airtight container, it stays fresh for up to 4 days, making it great for meal prep during the week.
Can I prepare the casserole in advance and bake later?
Yes! Prepare the casserole up to step 5, then cover and refrigerate. When ready, just bake it in the oven as directed, adding a little extra time if it’s coming straight from the fridge.
Final Thoughts
Honestly, the Cheeseburger Casserole with Spaghetti Squash Recipe is a total game-changer for anyone looking to enjoy familiar comfort food with a twist that feels fresh and healthy. It’s easy to make, delightful to eat, and perfect for sharing with loved ones. I can’t wait for you to try it and add it to your recipe collection—you’ll be making this one again and again, trust me!
