Preheat the oven to 190C/375F.
Heat up olive oil in a large skillet, placed over medium heat. saute onions and peppers for 7 minutes. Add white beans, garlic, and canned tomatoes. Bring to a boil, season with salt and pepper.
4 tablespoon olive oil, 1 medium white onion, 2 garlic cloves, 2 bell peppers, salt and pepper
In a large bowl combine flour with baking powder, grated zucchini and feta cheese.
1 ½ teaspoon baking powder, 120 g 4 oz flour, 140 g 5 oz feta, 200 g 7 oz grated zucchini
Transfer boiling tomato and bean mixture into a casserole dish. Place dollops of zucchini batter and top. Cover the dish with foil and bake for 40 minutes.
400 g 14 oz canned tomatoes, 1 can white beans
Remove the foil, poke dumplings with a toothpick to make sure they are cooked through.
Optionally you can cook dumpling without any foil for 50 minutes or until lightly browned and cooked through.