“I’ve always made my kids’ lunches. I made my kids’ baby food,” says Lexington’s Lisa Farrell. “I didn’t do all the mommy things; that was the thing that I did.” Now she’s packing school lunches for lots of other kids as the founder of Red Apple Lunch, a service that aims to make brown-bagging easier on busy parents with online ordering and home delivery for up to four nights a week. Farrell—who spent a corporate career working for companies like Odwalla—piloted the concept in Cambridge and Arlington last spring. Starting Oct. 1, she’s slated to expand to Boston and eight other surrounding towns, delivering lunches made with locally sourced and organic ingredients at Malden’s Stock Pot Kitchen. “We’re not trying to get too exotic. We’re trying to just have really good ingredients and simple, balanced menus,” says Farrell, who’s using Iggy’s bread and Cabot cheddar in her turkey sandwiches. Such mains are served with a choice of fruit and veggie—say, an apple from Apex Orchards and carrots from Drumlin Farm—plus a small treat, like choco-craisin mix or a chocolate chip bite. Even sweeter: Red Apple Lunch has partnered with Malden’s Bread of Life to donate a healthy snack to a homeless child for every lunch sold.