Instant Pot Vegetable Soup

Name: Instant Pot Vegetable Soup
Ingredients: 2 tablespoons extra-virgin olive oil, plus more for garnish; ½ cup chopped onion; ½ cup chopped green bell pepper; 2 cloves garlic, minced; 1 ½ cups chopped green cabbage; 1 ½ cups small cauliflower florets; 1 cup chopped carrots; ½ cup green beans, cut into 1-inch pieces; 4 cups low-sodium vegetable broth; 1 (14 ounce) can no-salt-added diced tomatoes; 1 bay leaf; ½ teaspoon salt; 4 cups chopped fresh spinach; 1 (15 ounce) can cannellini beans, rinsed; ¼ cup chopped fresh basil