If you don’t have a freezer that can hold two weeks worth of meals, buy one. I have three homemade frozen pizzas and a half dozen chicken pot pies waiting right now.

I can cook a whole roast chicken on Sunday and enjoy chicken tacos, chicken sandwiches, etc. all week.

I can cook a five liter pot of chili/soup/stew and freeze it into pint containers; I’ve got a nice hot meal any time.

Slow cookers are another option.