AB's chilli

Name: AB's chilli
Cuisine: American, Latin American
Ingredients: 2 tbsp olive oil; 1 red onion; 1 white onion; 2 cloves garlic; 1 1/2 lb. Ground beef; 1 15oz can kidney beans; 15 oz can black beans; 6oz can tomato paste; 15oz can diced tomatoes; 1 cup chicken stock; 1 tbsp chili powder; 1 top ground cumin; 1/4 tsp cayenne powder; 1/4 tsp garlic powder; 1/2 tsp onion powder; 1/2 tbsp brown sugar; 1 tsp salt; 1/2 tsp black pepper; Green onion; Sour cream; Cheddar cheese