A flavorful and protein-rich breakfast casserole made with roasted spaghetti squash, spicy chorizo, and eggs—this dish is perfect for meal prepping or serving a crowd. It’s a low-carb, gluten-free recipe that doesn’t compromise on taste or texture.

Why You’ll Love This Recipe

This breakfast casserole offers a delicious twist on traditional morning fare by replacing potatoes with nutrient-dense spaghetti squash. The chorizo adds bold flavor while the eggs and cheese bring a creamy, comforting texture. It’s easy to make, reheats well, and fits a variety of diets including low-carb and gluten-free.

ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

Spaghetti squash (cooked and shredded)
Chorizo sausage (pork or chicken)
Onion (finely diced)
Red bell pepper (finely diced)
Eggs
Egg whites (optional substitute: more whole eggs)
Milk (dairy or non-dairy alternative)
Coconut flour (for slight thickening)
Sharp cheddar cheese (shredded)
Salt and pepper

directions

Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch casserole dish.
In a skillet over medium heat, cook the chorizo until browned. Drain excess fat.
Add the diced onion and bell pepper to the skillet. Sauté until tender, about 5 minutes.
In a large bowl, combine the cooked spaghetti squash, chorizo mixture, salt, and pepper.
In another bowl, whisk together the eggs, egg whites, milk, and coconut flour until well blended.
Mix the egg mixture into the squash and chorizo mixture.
Pour everything into the prepared baking dish. Top evenly with shredded cheddar cheese.
Bake for 35–40 minutes, or until the center is set and the top is golden brown.
Let cool slightly before slicing and serving.

Servings and timing

Servings: 8
Prep time: 15 minutes
Cook time: 35–40 minutes
Total time: Approximately 50–55 minutes

Variations

Vegetarian option: Replace chorizo with plant-based sausage or sautéed mushrooms for a meat-free version.
Add greens: Mix in chopped spinach or kale for extra nutrients.
Spice it up: Add jalapeños or use hot chorizo for more heat.
Cheese swap: Try pepper jack or gouda for a flavor variation.

storage/reheating

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave for 1–2 minutes or in a preheated oven at 350°F (175°C) for about 10 minutes. This casserole also freezes well; wrap tightly and store for up to 2 months. Thaw overnight in the refrigerator before reheating.

FAQs

What does spaghetti squash taste like?

Spaghetti squash has a mild, slightly sweet flavor and a texture similar to thin noodles, making it a great low-carb substitute for pasta or potatoes.

Can I make this casserole ahead of time?

Yes, you can prepare the entire casserole the night before, cover it, and bake it in the morning. Alternatively, bake it in advance and reheat when needed.

Is this recipe keto-friendly?

Yes, it is low in carbs and high in protein and fats, making it suitable for a ketogenic diet.

What can I substitute for coconut flour?

You can omit it or use almond flour. It helps slightly thicken the mixture but is not essential.

Can I use pre-cooked spaghetti squash?

Absolutely. If you have leftover spaghetti squash, it’s perfect for this recipe.

Can I freeze this casserole?

Yes. Once cooled, slice it into portions and freeze in airtight containers for up to 2 months.

How do I know when the casserole is done baking?

The center should be firm and no longer jiggly, and the top should be golden. A knife inserted in the center should come out clean.

What kind of chorizo should I use?

Use uncooked Mexican-style chorizo. You can also use a spicy or mild variety depending on your preference.

Can I make this dairy-free?

Yes, use a plant-based milk and omit the cheese or use a dairy-free alternative.

How do I reheat frozen casserole portions?

Thaw overnight in the fridge, then reheat in the oven at 350°F (175°C) for about 20 minutes or until heated through.

Conclusion

This Spaghetti Squash Chorizo Breakfast Casserole is a wholesome and satisfying way to start your day. Packed with protein, veggies, and bold flavors, it’s a perfect choice for anyone seeking a nutritious, low-carb breakfast option that’s easy to prepare and even easier to enjoy. Whether you’re feeding a family or prepping meals for the week, this casserole delivers both taste and convenience.