It is a great time saving tip to double your recipes for dinner and freeze half of it for another busy day. Many foods freeze well and by doubling the recipe time is saved. Personally, the benefit I enjoy the most is two dinners, but only one set of dishes!
Here is a fun article listing recipes and foods that freeze well. Also included are freezing tips and a great list of how long specific foods can be frozen for ultimate quality. Here is the link to the article, "Ready Made by You: Fix it, Freeze it, Heat it, Eat it," by Sharon K. Ghag.