Stuffed Peppers for Grandpa

Henry: What are you cooking for your grandfather's birthday, Grace? Grace: I was going to make lamb stew, but he's trying to eat less meat now, so I've decided on a vegetable dish instead. Henry: Like what? Grace: Stuffed peppers with rice and herbs. They're easy, although they take about an hour in the oven. Henry: Sounds great. Have you bought everything? Grace: Almost. I still need red peppers and fresh mint. The market closes at five, so I'll go straight after school. Henry: I could help with the dessert if you like. I make a really good apple cake. Grace: That would be wonderful, but he can't eat nuts, so please don't put any walnuts in it. Henry: No problem. I'll bake it on Friday evening. Grace: Perfect. Dinner is at seven on Saturday, but come at six to help me set the table.