Easy One Pot Vegan Mac and Cheese with Spinach

Name: Easy One Pot Vegan Mac and Cheese with Spinach
Prep time: 5 min
Cook time: 15 min
Total time: 20 min
Cuisine: British
Ingredients: 100 g macaroni; 400 ml oat milk ((or your regular milk)); 40 g frozen spinach ((1 block or a generous handful of fresh spinach)); 1 teaspoon garlic powder; 1 tablespoon dried parsley ((or a handful of fresh, chopped)); 2 teaspoons dried chives ((or a few stalks of fresh, chopped)); 2 tablespoons nutritional yeast ((also known as nooch)); 50 g vegan cheddar ((grated)); 1 teaspoon mustard ((I like dijon or American yellow mustard for this)); 1 pinch salt and pepper