Green Beans with Mushrooms and Onions

Here's a tasty and healthy  green bean dish I plan on making as one of the sides for my large Thanksgiving gathering. 
Ingredients;
Green beans, washed and trimmed
2 Tbsp olive oil
1/2 cup chopped onions
1 cup of mushrooms, sliced
1 large clove of garlic, minced
Salt and pepper to taste
2 Tbsp fresh squeezed lemon juice
Steam beans.
Saute mushrooms and onions in olive oil until tender.
Add garlic, cooked green beans and season with salt and pepper. If needed add more olive oil to the pan. Saute a few more minutes. Squeeze lemon juice. Mix and serve.