If you are concerned about your fresh green beans getting mushy, you can blanch them before mixing them with the sauce. To do this, add the green beans to salted boiling water (around 1 teaspooon of salt per 8 cups of water) and cook them for 5-7 minutes. Drain before coating with the sauce.u003cbr/u003eu003cbr/u003eIf using frozen beans, do not blanch them but be sure to thaw and drain thoroughly before adding to the baking dish.