Preheat the oven to 200°C on a fan forced setting.
In a bowl, combine the black beans, tomato, red onion and ground cumin and stir well.
Place the red capsicum on a baking tray and fill with the black bean mixture. Drizzle over the olive oil.
Cover the tray in foil and put in it into the oven to cook for 20-25 minutes, until the capsicum has softened.
Remove the tray from the oven and crumble the feta over the stuffed capsicum. Place back into the oven uncovered for another 10 minutes.
Once cooked, transfer the stuffed capsicum onto a plate.
Add the side salad of rocket and avocado to the plate and drizzle with olive oil. Season everything with salt and pepper to serve.