When making rice or pasta, always triple the recipe and freeze portions in ziploc bags.
Always make a HUGE batch of spaghetti sauce and freeze portions in ziplocs. Use this not just for spaghetti, but think about meatball sandwiches, pasta w/ Italian sausages, chicken parmesan, baked pasta dishes, etc. Pull out the ziplocs about 2 days before and thaw in fridge.
If you make your own meatballs, make a HUGE batch. I do 6 lbs of hamburger meat at a time. Bake the meatballs on foil lined rimmed cookie sheets - much easier than doing in a frying pan. Again, freeze in smaller portions in ziplocs. These can be used for meatball sandwiches, pasta, put in crockpot frozen with cream of mushroom soup and serve w/ egg noodles. I even crumble mine up and make shepherd's pie. Warm up the crumbled meatballs w/ ketchup, worcestershire sauce, salt, pepper, dried thyme if you have it, frozen peas and carrots. Put in a casserole dish, top w/ mashed potatoes (I use instant and add a little sour cream) and bake 350 for about 30 mins. You can also put shredded cheddar on top.
Make up large amounts of cooked chicken breasts in your crock pot. I prefer the ones on the bone, more flavor than the boneless-skinless. Put as many as your crockpot will hold, cover w/ water and cook on high 2-3 hours or low 6 hours. I do this on the weekends when I'm going to be home during the day. Shred, cube or leave whole and freeze. Use this for tacos, enchiladas, soup, stir-fry, casseroles, salads.
I work full time but it is very important to me that we sit down as a family almost every night with a home cooked meal. But I do take shortcuts whenever I can!