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Butternut Squash Casserole

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PREP TIME
20 min
COOKING TIME
50 min
TOTAL TIME
70 min
SERVINGS
4 servings
Dinner
Butternut Squash Casserole
Ingredients
  • 2 tablespoons olive oil
  • 2 small onions, chopped
  • 1 (2 1/2 pound) butternut squash - peeled, seeded, and cubed
  • 6 cloves garlic, crushed
  • 1/4 teaspoon salt
  • 1 tablespoon water, or as needed
  • 3 eggs
  • 3/4 cup sour cream
  • 1 cup grated Parmesan cheese
  • 1/3 cup chopped fresh basil
  • 1/4 teaspoon ground black pepper
  • 1/2 (8 ounce) package coarsely shredded mozzarella cheese
Instructions
1
Preheat your oven to the desired temperature of 425 degrees Fahrenheit (220 degrees Celsius).
2
Next, take a moment to prepare your 9x13-inch casserole dish by coating it with a layer of grease.
3
In a skillet, heat olive oil over medium heat and cook the onions until they become soft and translucent. This process should take around 10 minutes, during which time you'll need to stir the onions occasionally.
4
Once the onions are cooked, add the squash and garlic to the skillet, stirring well to combine. Season with a pinch of salt to bring out the flavors in your dish.
5
Continue cooking, stirring occasionally, until the squash is slightly tender to the touch. If your mixture becomes too dry at any point, don't hesitate to add a splash of water to revive it.
6
Transfer the squash mixture to your prepared casserole dish, making sure to spread it evenly.
7
In a separate bowl, whisk the eggs lightly before stirring in sour cream, Parmesan cheese, basil, and black pepper.
8
Pour the egg mixture over the squash mixture in your casserole dish, making sure to cover it evenly.
9
Top your dish with a generous helping of mozzarella cheese, allowing it to melt and bubble during the baking process.
10
Bake your dish in the preheated oven for approximately 30 minutes, or until the squash is tender and the mozzarella cheese has reached your desired level of browning.