Subscribe to the magazine Real Simple. I LOVE IT! Each month they have 10-15 "easy" meals that are really good and don't contain ridiculously exotic ingredients. Tonight, I'm making a chicken gumbo from this month's issue and later in the week I am making a beef and mushroom pasta.
I would not suggest that you take an entire day to premake meals. That's unrealistic and you won't be able to stick with it. I would suggest, though, that you plan your meals for the entire week and do one grocery store trip. This will keep you on-track and aware of what you are using.
After you have purchased what you need for the week, look at your recipes and ingredients. If three recipes call for chopped onion- chop two whole onions at once. Portion it out into ziplocs and freeze the baggies. If you need those onions on Wednesday, take them out of the freezer Tuesday night.
The "prep time" is what takes so long in cooking. I really love to cook and enjoy getting into my ktichen each night (with my 4 yr old) and making a healthy dinner. I have learned over the years that careful planning and prepping/freezing cuts down substantially on nightly cooking time.
Easy to make/freeze/reheat:
- Stuffed shells: I do mine with "less cheese and more stuff"... ground turkey, little bit of part skim ricotta, diced peppers, diced onions, sliced (canned) black olives, squash, etc).
- Pork Loin: I roast several at one time. We eat one that night and the others cool completely, slice thinly and freeze. When we are ready to have the frozen, I take a bag out of the freezer the night before and the warm it (wrapped in foil) at 300 degrees; just add egg noodles and a frozen veggie and you have a meal!
- Meatloaf: Same as above- make two at a time, slice, freeze and then reheat. Add sides and you're done
- Chicken tenders: making them from scratch takes a really long time, so when I make them I make TONS of them. I freeze them raw and then bake at 425 for 20 minutes, flip and another 20 minutes (from frozen) and then cool them on a baking rack so they don't get soggy
- Pulled Pork: google a recipe and you'll likely find a good one. Again, make a really big batch b/c this freezes and defrosts easily! Add coleslaw and a veggie and dinner is finished in 10 minutes.
- Beef Stew: The Better Homes and Gardens Slow Cooker cookbook is amazing! We use the "Super Simple Beef Stew" recipe (and the Creamy Chicken Chowder) probably twice a month when the weather gets chilly. You can make a large batch and then freeze 1/2 in a large ziploc. Defrost in the fridge and warm in the crock pot.
- Mashed potatoes: Another side dish that is a pain to make, so make a huge thing when you do. Portion it out into ziplocs and defrost when you need them! I like to defrost mine in the fridge overnight and then put into th slow cooker in the morning with about 1/4 cup of milk and some butter. As the potatoes melt, they rehydrate with the milk and butter. Stir occassionally, but by dinner time they should be ready!