Italian White Bean Soup

2 tbsp olive oil
1 med onion, chopped
1 1/2 cup water
1 can (19 oz) cannelloni (white kidney) beans, undrained
1 can (16 oz) navy beans, undrained
1 can (15 1/2 oz) great northern beans, undrained
1 chicken bouillon cube
1 tsp italian seasoning
1 tsp garlic powder

In large pot, heat oil over med-high heat. Saute onion for 5-6 min or until golden brown. Add remaining ingredients and bring to boil. Reduce heat to med-low heat and simmer 8-10 min or until heated through.