When I do my meal planning and grocery shopping for the week, I use a worksheet (egads! I know... I thought I left those nasty things back in elementary school too!) however it helps a lot. I'm able to write down what we will be eating for dinner each night on the left and then on the right I keep track of what I need to purchase at the grocery store.
I found it online somewhere although you can find a ton of ideas on organized.com.
It keeps me focused on buying what I need and it's one of the ways I save money at the grocery store.
This week's meals...
Monday - Tacos
Tuesday - Pasta bake (again my husband loves this type of food and it makes a lot of leftovers for lunches)
Wednesday - Baked tilapia with broccoli slaw salad
Thursday - egg salad sandwiches
Friday - leftovers
Saturday - Grilled skirt steak
Sunday - Chicken casserole