What kind of food stays good in the fridge for a long time? I am looking for recipes of both main courses and snacks that I can make and stash in the fridge for a while, take out, re-heat and eat. Any ideas?
Acidic and salty foods both keep well. Tomato-based soups, sauces, and casseroles will last at least a week. Mac&cheese is durable because cheese is salty. I once forgot a Costco rotisserie chicken in the fridge for a week but because they are salty, it was still perfect. Sweet-and-sour dishes keep well. Don't repeatedly reheat-and-rechill entire containers of food - just remove your portion and return the rest to the refrigerator.
Some muffin batters are designed to be kept for a long time in the fridge, so you can bake a few fresh muffins on demand.
Also homemade, fermented things, like pickles or kimchi. You can pickle all sorts of veggies and use them as an easy side, a relish, or eat them out of the jar.
Lasagna keeps really well in the fridge. When you're ready cut as much as you want off of it, then reheat it in the microwave.
After 3 days, I think that's when the freezer is the best option for take out, re-heat and eat option.