Green Gazpacho With Spicy Croutons

Name: Green Gazpacho With Spicy Croutons
Ingredients: 1 large cucumber – peeled, de-seeded and roughly chopped; 4 large tomatillos – papery skins removed and roughly chopped; 1 large yellow bell pepper – de-seeded and roughly chopped; 1 small yellow onion – roughly diced; 2 cups watercress – tough stems removed and roughly chopped; 1/2 cup chopped cilantro; 2 1/2 cups water; 1 tbsp. kosher salt + more salt and fresh ground black pepper, to taste; 4 slices day-old sourdough bread; 1 tsp. olive oil; 1 tsp. smoked paprika