Garlicky Green Beans with Mushrooms

I've been using this recipe all winter with green beans from the freezer - tastes great with both fresh or frozen green beans!

Source: adapted from allrecipes.com

2 1/2 lbs. fresh green beans, trimmed

2 c. sliced fresh mushrooms

2 T. onion, finely chopped

2 cloves garlic, minced

4 t. butter

1/2 t. salt

1/4 t. pepper

Steam green beans until crisp-tender.  Meanwhile, in a large skillet, saute mushrooms, onion and garlic in butter until tender.  Drain beans; add to skillet.  Stir in salt and pepper; heat through.

Serves 8