This easy sauce is yummy with steak, or with Pepper Beef Puffs .
Make and share this Mushroom Sauce recipe from Food.com.
- Heat butter in a pan. Add mushrooms, cook until mushrooms are just tender.
- Stir in flour, cook 1 minute.
- Gradually stir in water, crumbled stock cube, and tomato paste.
- Season with salt & pepper.