There is a place in Kerrisdale that caters to people that are just in your type of situation. Check out the Stock Up Cafe. They have "home-made" prepared and oven ready meals in single and family sizes. Their casseroles even come with in white pyrex oven dishes.
Stock Up Cafe
6019 West Boulevard
Vancouver, BC V6M3X2
You might try Hot Cuisine2083 Alma St, 604-267-1131They have a variety of fresh and frozen entrees that are tasty: I think they are in the range of $8-10 a serving but some may run a bit higher. If you like Thai, Maenam, Montri's and Thang Thai are all in the hood. I believe Whole Foods over at Cambie does a range of prepared foods. Also Les Amis du Fromage http://www.buycheese.com/ on 2nd near Burrard has a variety of prepared soups and entrees that just need to be heated up in the oven.Maybe indicate the types of food you like and a budget.
1938 W. 4th Ave, Vancouver, BC V6J 1M5, CA