Creamy Spring Pasta with Peas and Spinach

Name: Creamy Spring Pasta with Peas and Spinach
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Italian
Ingredients: 1 tablespoon olive oil; 1 yellow onion, diced; 2 cloves garlic, minced or grated; 2 tablespoons cornstarch; 2 cups milk (500 milliliters); 1 cup heavy cream (250 milliliters); 3 tablespoons grated parmesan; 1 teaspoon freshly cracked pepper; 1-2 teaspoon(s) light vinegar; 1 teaspoon salt, or to taste; 1 tablespoon olive oil (or a neutral oil); 1 pound chicken thighs, cut in 1 inch cubes (450 grams); 1 1/2 teaspoons paprika powder; 1/2 teaspoon onion salt (or onion powder + salt); 1/2 teaspoon freshly cracked pepper; 4 cups roughly chopped fresh spinach (120 grams); 1 cup frozen peas (140 grams); 12 ounces farfalle (or your favorite pasta shape, 350 grams); 3 tablespoons chopped walnuts, roasted; 3 tablespoons chopped parsley (optional)