I love many of Ina Garten, The Barefoot Contessa's recipes and have adapted many throughout the years. This salad is so easy it can be thrown together just before serving and always best at room temperature.
Cut tomatoes in half and place in serving dish, along with slivered red onion.
Slice and slightly crumble feta. Add feta to tomatoes and gently stir. Serve at room temperature.
Can be made an hour or so before serving; refrigerate and bring to room temperature.