Here is a helpful way to plan meals and groceries. A Pre-Printed Grocery list. Download for FREE and make a few copies while you are at it... pin one up close to the fridge or pantry. (I keep mine posted on the inside of a cabinet door between the fridge and stove so I can easily mark what I am running low on as I see it.) If everyone in the house marks what they have used the last of or see running low, there will be a whole new light shed on grocery shopping and cooking as well.
Plan your meals to the right and Keep It Simple. List the main dish for dinners and a side item. Have several veggies on hand to pick one.
Also try to use themes to simplify the planning. For example: Monday are Chicken nights, Tuesdays are Mexican, Wednesday is crockpot cooking, Thursday is vegetarian, etc. Get kid involved too and have them pick a meal each week to help plan, prep and cook.
By planning your meals and shopping weekly for them you will save time- by planning, save money- by shopping only for what you need, and eat healthier- by having meals ready and less temptation to eat out as much.