Mushroom Stroganoff with Pappardelle

Name: Mushroom Stroganoff with Pappardelle
Ingredients: 1 portion pappardelle (uncooked); 2 cloves garlic (minced); 1/2 yellow onion (diced); 125 g cremini mushrooms (sliced); 1 3/4 cups vegetable broth (plus more, if needed); 1/4 cup milk; 1 1/2 tbsp all purpose flour; 2 tbsp olive oil (divided); 1 tbsp thyme leaves; 1/4 tsp salt (plus more, if needed); 1/4 tsp black pepper (cracked or ground, plus more if needed); parmesan cheese (grated, for garnish); italian parsley leaves (chopped, for garnish, optional)