This is delicious and easy to make.  Perfect over rice or buckwheat soba noodles. 

Ingredients
1-2 tablespoons olive oil or coconut oil
2 medium onions, saute sliced
1 12 ounce package cremini mushrooms, sliced
1-2 handfuls fresh shiitake mushrooms, thinly sliced
1-2 cloves  garlic, minced
Juice from 1 tablespoon grated ginger
1 tablespoon soy sauce
2 cups vegetable stock
2 tablespoons kudzu powder or corn starch, dissolved in ¼ cup water

1. Heat oil in large skillet.  Add onions and saute for 5 or more minutes, until translucent.
2. Add mushrooms, saute for another 5 minutes, until mushrooms are soft.
3. Add garlic, ginger juice, soy sauce, and vegetable stock.  Simmer for 5-10 minutes.
4. Stir in dissolved kudzu or corn starch powder.  Simmer 5 more minutes, until thickened

Enjoy!

Marian