Heat oil over medium heat and sauté the chopped onion and diced hot peppers for 2-3 minutes until softened. Add the peeled and grated potatoes, then pour in the vegetable stock. Bring to a simmer and cook for 5 minutes, then add the canned tomatoes.
Continue cooking over medium heat for 15-20 minutes until the potatoes are tender. Add the kidney beans and corn, then bring back to a simmer. Season to taste with salt, paprika powder, and pepper.