Potato & pepper curry

Name: Potato & pepper curry
Prep time: 10 min
Cook time: 55 min
Total time: 1 h 5 min
Cuisine: Asian, Indian
Ingredients: 3 tbsps veg oil; 1 onion, diced; 1 red pepper, deseeded and chopped; 1 green pepper, deseeded and chopped; 3 potatoes, peeled and roughly chopped; 2 cloves of garlic, crushed; 1 heaped tbsp curry powder; 1 tsp chilli powder; 2 tins of chopped tomatoes; Salt and pepper; ½ Red onion to garnish