Armenian Bean and Walnut Pate

Name: Armenian Bean and Walnut Pate
Ingredients: 1 cup dark red kidney beans, soaked overnight and rinsed well; 2 cups water; 1/4 white onion, minced; 1 bay leaf; 3/4 cup walnuts, lightly toasted; 4 tablespoons butter; 1/2 teaspoon chopped garlic; Salt and freshly ground black pepper; 1 tablespoon freshly chopped dill; 1 tablespoon freshly chopped mint or basil leaves; 1 tablespoon freshly chopped flat-leaf parsley; 1/4 cup pomegranate seeds, about 1/2 of a pomegranate, plus more for garnish; Toasted walnuts, for garnish