ahhh now thats a whole different topic.. but basically cook in bulk portion things out, freeze portions for later in the week. never cook less that 6 meals at one time.
make a HUGE pan of eggs,cheese, sausage. portion it out. freeze some thats a week of breakfast right there
crock pot. throw a whole mess of meat and veggies in there and do the same.
oven bake 20+ chicken breasts at once. marinate some, season some, put sauces on some.
grill a london broil and slic it all up and throw it in the fridge in portions
burgers grill 20 burgers. freeze 10 put them in bags of 2. the other 10 are placed 2 in a bag and eaten that week.
hope that helps some.