We like quite basic food and we have a meal plan which I don't always stick to religiously but it helps knowing what I should be cooking and if I don't feel like creating something different go with what is on the plan.
Ours is on a 2 week rota as well:
Monday - Spaghetti (mince and veg with pasta)
Tuesday - Pork chops and veg
Wednesday - stir fry (chicken/turkey), rice/noodles
Thursday - lamb chops and veg
Friday - Sausages and veg
Saturday - pizza (supermarket ones) I sometimes make home made ones if I'm in the mood.
Sunday - Fish and chips
Monday - Apricot chicken and rice
Tuesday - rissoles and veg
Wednesday - Spaghettie and pasta
Thursday - Sausages and veg
Friday - Stir fry
Saturday - lamb chops and veg
Sunday - roast and veg
I alternate these quite often with lasagne, meatballs, osso bucco (my version is just a lamb stew really) and vegetable soup. All these things I make in bulk, generally on a weekend, and have for dinner that evening and then freeze the rest for days I can't be bothered.
Lunches are sandwiches, either ham and salad, chicken and salad, vegemite, jame or some other condiment. I also alternate these with quiche I buy from the supermarket, sausage rolls and fish fingers.
Our shopping varies between 70 and 100 per week dependant upon how much fruit I buy and any treats I might buy. We tend to do a fair bit of cooking for other kids that are at our house most of the time too which adds up in terms of yoghurts and otehr things they might eat.