In the video, a person is seen preparing a dish with various vegetables. The person is first shown placing cherry tomatoes onto a tray. Then, the person is seen placing slices of yellow squash onto the same tray. The person then pours olive oil onto the vegetables. The person then places slices of red onion onto the tray. Finally, the person places slices of red bell pepper onto the tray. The person then places the tray into the oven.