Spaghetti Squash Au Gratin

Ingredients

• 1 medium spaghetti squash (about 2 to 3 pounds)
• 2 tablespoons olive oil
• 1 medium onion, finely chopped
• 3 cloves garlic, minced
• 1 cup sour cream
• 1 cup sharp cheddar cheese, shredded
• 1/2 cup Parmesan cheese, grated
• 1 teaspoon salt
• 1/2 teaspoon freshly ground black pepper
• 1/2 teaspoon paprika
• 2 tablespoons butter, melted
• 1/4 cup bread crumbs
• Fresh parsley, chopped (for garnish)