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slow cooker tomato soup

Slow Cooker Tomato Soup

This slow cooker tomato soup is smooth and rich, with sweet onions, tomato depth, and a creamy finish. A splash of sherry and hint of cayenne add warmth and subtle heat.
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Prep Time: 10 minutes
Cook Time: 4 hours
Total Time: 4 hours 10 minutes

Ingredients

  • 1 medium yellow onion finely chopped
  • 2  Tbsp unsalted butter
  • 2  Tbsp all‑purpose flour
  • 1  Tbsp packed brown sugar
  • 1  Tbsp tomato paste
  • 1  tsp kosher salt or ½ tsp table salt
  • ½  tsp freshly ground black pepper
  • Pinch cayenne pepper
  • 3 14.5‑oz cans diced tomatoes, undrained
  • 3  cups low‑sodium chicken or vegetable broth plus extra as needed
  • 2 bay leaves
  • ½  cup heavy cream
  • 2  tsp dry sherry

Instructions

  • Combine onion, butter, flour, brown sugar, tomato paste, salt, pepper, and cayenne in a microwave‑safe bowl; microwave 5 min until onion softens.
  • Transfer to slow cooker; add diced tomatoes, broth, and bay leaves.
  • Cook on low for 4–6 hr or high for 3–5 hr.
  • Discard bay leaves; blend until smooth, then stir in cream and sherry; thin with broth if needed.
  • Season to taste and serve warm.