Pumpkin, Black Bean and Sausage Stew

2 extra-virgin olive oil

1 onion, finely chopped

3 chicken broth

1 (diced into bite-sized pieces)

2 15-ounce cans black beans, drained

1 15-ounce can diced tomatoes in juice

1 frozen corn

2 15-ounce cans pumpkin puree

1 milk

1 curry powder

1/2 ground cumin

cayenne pepper, salt and sugar to taste