Leftover Chicken Tagliatelle

Name: Leftover Chicken Tagliatelle
Cook time: 20 min
Total time: 20 min
Cuisine: Italian, European
Ingredients: 250 g (8.8 oz) tagliatelle pasta, (fresh or dried); 2 cups (200g) leftover chicken, (finely chopped); 1 cup (100g) leftover sausage, ham or bacon ((optional)); 2 cups (200g) fresh spinach, (chopped); 2 onions, (medium); 2 tbsp. olive oil; 200 ml cooking cream*; sea salt and black pepper to taste; 2 liters water for cooking pasta (or more); 1 tbsp. seasoned salt, (or more to taste)