Mushroom Stroganoff

I'm not sure of this one. I've changed it slightly and am yet to retry.

• Ready In: 25 mins
• Serves: 2

Ingredients

• 1  tablespoon coconut oil
• 4  sticks celery (chopped)
• 1  medium onion (finely chopped)
• 2  garlic cloves (crushed)
• 450  g button mushrooms
• 1  tablespoon plain flour
• 125  ml  vegetable stock
• 1  teaspoon  whole grain mustard
• 1  teaspoon  marmite
• 1  bay leaf (chopped)
•  salt & pepper
• 150  g plain yogurt (low fat)
• 3  cups pasta (of your choice)

Directions

1. Saute celery, onion, garlic and mushrooms in oil for 5 minutes until tender.
2. Add flour and cook for a few minutes more, then add vegetable stock and stir until sauce thickens.
3. Add mustard, marmite, bay leaf, salt and pepper. Simmer for 1 minute then add yogurt.
4. Cook pasta as directed.
5. Reheat gently and serve on top of the pasta.