Boil water and cook pasta on hob

Heat olive oil in pan -add chopped red onion. After few minutes add chopped mushrooms and garlic

When veg is soft and cooked, squeeze the juice of 3/4 lemon in and add chopped parsley

Drain pasta once cooked and add to pan of ingredients. Add the creme fraiche and toss thoroughly.

Add salt and pepper to taste. Serve with last quarter of lemon, extra parsley, parmesan and black pepper (optional)