Creamy Tomato Soup with Toasted Almonds

Name: Creamy Tomato Soup with Toasted Almonds
Ingredients: 1 cup sliced blanched almonds; 1/4 cup extra-virgin olive oil; 2 medium onions, very thinly sliced; 4 garlic cloves, very thinly sliced; 1 celery rib, very thinly sliced; Four 14 1/2-ounce cans diced tomatoes; 1 tablespoon tomato paste; 1 tablespoon sugar; 2 cups chicken stock or low-sodium broth; 1/4 teaspoon cayenne pepper; Salt and freshly ground black pepper; 1 cup heavy cream; 1/2 teaspoon finely grated orange zest; 2 tablespoons unsalted butter