Walnut Meatballs with Spaghetti Squash and Mushroom Sauce Recipe

Name: Walnut Meatballs with Spaghetti Squash and Mushroom Sauce Recipe
Ingredients: 1 spaghetti squash; 1 teaspoon olive oil; 1 cup onions, coarsely chopped; 2 cloves garlic; 4 tablespoons olive oil; 1 cup walnuts; ½ cup pumpkin seeds; 1 cup parsley; ½ cup grated Parmesan cheese; ¼ cup bread crumbs; ½ teaspoon salt; ¼ teaspoon pepper; 1 egg, beaten; 1 ½ cups sliced Baby Bella mushrooms; 1 tablespoon butter; 2 teaspoons flour; 1 cup vegetable broth; 1 tablespoon white wine; ¼ cup heavy whipping cream; ½ teaspoon oregano