I've made these for Christmas dinner many times. Always a hit.

1/2 lb sliced bacon, diced
4 fresh mushrooms, sliced
1 clove garlic, diced
2 15.5-oz cans French cut green beans
1 1/2 tsp soy sauce

Place bacon into a large saucepan over medium heat.  Cook until browned, stirring occasionally.  Add the mushrooms and garlic, and reduce the heat to medium-low.  Let cook for a few minutes to soften the mushrooms.  Stir in the green beans and soy sauce and heat through.