I try to cut down on waste by eliminating unneeded packaging such as cans and boxes. Using foods that are less processed means I do a little more work, but the trade off is that I have more control on what my family eats and less packaging to go to the land-fill. Also, it usually means that I save money. Thirty years ago, I started using a recipe that helped me do just that.
Many casserole recipes call for a can of soup. This recipe replaces the canned version and doesn't take much more time or effort than opening the can. In my opinion, the added benefit is that the end result tastes fresher.
Saute 1/4 cup finely chopped mushrooms and 1 T. finely chopped onion in butter before adding flour.
Use chicken broth or bouillon as half the liquid. Add 1/4 t. poultry seasoning or sage and diced cooked chicken if available.
Please share the ways in which you make good choices for the environment.