This creamy tomato basil bisque is made with crushed tomatoes, fresh basil, vegetables, and half-and-half with a touch of cayenne and allspice. Cooling the soup and tempering the dairy helps keep it smooth and creamy.
In a soup pot or Dutch oven place olive oil and butter. Sauté the celery, carrots and onions until translucent.
Sprinkle with salt and pepper. Add the tomatoes, vegetable broth, and basil. Bring to a boil. Reduce heat to medium and simmer for about 10 minutes. Add the allspice and cayenne.
Using an immersion blender, carefully crush all the ingredients.
Turn off the heat and allow it to cool to approximately 150°F. Temper the half-and-half with a little warm soup, then slowly stir it into the pot. Gently reheat if needed, but do not boil. See notes.
Notes
Tempering the half-and-half: In a separate bowl, gradually whisk 1–2 ladles of the warm soup into the half-and-half to temper it. Slowly pour the tempered half-and-half into the soup, stirring continuously until fully incorporated. If necessary, gently reheat over low heat without allowing the soup to boil.Heavy cream:Heavy cream can be substituted for half-and-half for a richer bisque. Its higher fat content also makes it less likely to curdle when combined with acidic tomatoes. I wouldn't automatically recommend replacing all 2 cups with heavy cream because it would substantially increase the richness and calories.