If you don't mind eating the same food as a main meal for a bit this method works:
Make a big entree of something on an off day. Chili, lasagna, slow cooked food, whatever.
Have some stuff ready to go as sides that require very minimal effort (sides like rice, frozen bagged veggies or fresh - fresh is best but if apathy takes hold then frozen is fine
In the evenings microwave some leftovers from your big entree and supplement it with a quick and easy side. It helps break up the monotony if that matters to you, and it's easy