One way to save money and keep your house a little cooler is to use a crockpot. You can put the ingredients in it before you leave for the day and have the meal or most of it ready when you return. I recently came upon a blog series of 100 days of summer slow cooker recipes. It started in May and she adds a new recipe to the list each day.
One of the recipes that caught my attention is a new take on Tater tot Hotdish. It uses chicken breasts instead of ground beef.