Clean, chop and cook once; enjoy twice.

Clean, chop and cook once; enjoy twice.  
When you do take the time to cook, pretend you are preparing for a party.  Once you are already set up with the utensils and equipment you need, why not make enough for multiple meals?  Although it might take a bit longer in the kitchen, it will save you enormous amounts of time throughout the week.  Cut up veggies and store them in produce containers for a few nights' worth of salad.  As far as main dishes go, casseroles, soups and chili all freeze beautifully. Cook enough to put half in the freezer for future dinners, or portion it out into individual freezer containers to bring lunch to the office.  By using this approach, you'll only have one major clean-up and will save yourself lots of time throughout the week.