Grilled Cheese Sandwich with Tomato Soup

Few lunch pairings are as recognisable as grilled cheese with tomato soup: crisp, buttered bread enclosing melted cheese, served beside a smooth, warming soup made for dipping. In this version, the tomato base is softened with onion and garlic, lifted with fresh basil and finished with double cream for a velvety texture. Cheddar gives the sandwich its familiar savoury melt, while pan-frying creates the deep golden crust that makes the contrast with the soup so satisfying. Simple, vegetarian and easy to adapt, it works as a comforting weekday lunch or a relaxed supper when you want something dependable and full-flavoured.
Cuisine style American comfort food
Cooking style Crowd-friendly
Time commitment Under 1 hour

Why this recipe works

  • Classic contrast: Crisp, buttered bread and melted cheddar give the sandwich enough structure to dip into the smooth tomato soup.
  • Balanced richness: Tomatoes bring natural acidity, which cuts through the cream and cheese for a more rounded finish.
  • Comforting but simple: The soup uses pantry-friendly tomatoes and stock, while the sandwich cooks quickly in a frying pan.

Get the most out of this recipe

Texture tips

  • For a crisper sandwich: Butter the bread evenly right to the edges and cook over a steady medium heat so the outside browns before it dries out.
  • For a smoother soup: Blend thoroughly after the basil is added, then warm gently once the cream goes in to keep the texture silky.
  • Avoid boiling the cream: Keep the soup on a low heat after adding cream; boiling can dull the flavour and affect the smooth finish.

Common mistakes

  • Cooking the sandwich too hot: High heat can brown the bread before the cheddar melts. Lower the heat and cook a little longer if the centre is still firm.
  • Not softening the onion enough: Let the onion cook until sweet and fully tender before adding the tomatoes; this gives the soup a rounder flavour.

Make-ahead tips

  • Make the soup ahead: The tomato soup can be cooked, cooled and refrigerated, then reheated gently before serving.
  • Freeze the soup only: Freeze the soup separately and make the grilled cheese fresh, as the sandwich is best crisp from the pan.
  • Reheat gently: Warm the soup over a low heat until piping hot, avoiding a hard boil once cream has been added.

Ingredient swaps

  • Dairy-free option: Use a dairy-free cream alternative in the soup and a plant-based cheese that melts well for the sandwich.
  • Change the cheese: Gruyere gives the sandwich a nuttier flavour, while a mature cheddar keeps the classic sharp, savoury profile.

Equipment you'll need

Ingredients

Tomato soup

Grilled cheese

Instructions
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  1. For the soup, melt the butter in a saucepan over a medium heat. Finely chop the onion, add it to the pan, and cook for 8 to 10 minutes until soft and sweet. Crush in the garlic and cook for 1 minute until fragrant.
  2. Tip in the canned tomatoes and vegetable stock, then bring to a gentle simmer. Cook for 12 to 15 minutes, stirring occasionally, until the onion is completely tender and the flavours have melded. Take off the heat and add most of the basil, reserving a few leaves to finish.
  3. Blend the soup until smooth and velvety, then return it to a low heat. Stir in the double cream and black pepper, and warm gently for 2 to 3 minutes without boiling. Taste and adjust with a little more black pepper if you like.
  4. While the soup warms, build the sandwiches: divide the cheddar between two slices of bread, then top with the remaining bread. Butter the outside of each sandwich evenly. Heat a frying pan over a medium heat.
  5. Cook the sandwiches for 3 to 4 minutes per side, pressing lightly, until deep golden and the cheese is melted. If the bread colours too quickly, lower the heat and give it an extra minute to melt through. Slice and serve with the soup, topped with the reserved basil leaves.

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Recipe notes

Tips

  • For an extra-smooth finish, blend the soup for a full minute, then keep it on a very low heat once the cream is added so it stays silky.
  • If your cheddar is slow to melt, cover the pan for the last minute of cooking to help the heat circulate and soften the centre.

Substitutions

  • Replace Double cream with Greek yogurt for a lighter, tangier soup; stir it in off the heat to prevent splitting.
  • Replace Cheddar cheese with Gruyere cheese for a nuttier, more savoury grilled cheese.

Storage

  • Refrigerate up to 3 days
  • Cool the soup quickly, then refrigerate in a sealed container for up to 3 days. Reheat gently in a saucepan over a low heat until piping hot; avoid boiling once reheated. Freeze the soup (without the grilled cheese) for up to 3 months, defrost overnight in the fridge, then reheat gently.

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Recipe overview

  • Servings: 2 servings
  • Total time: 40min (35min active)
  • Difficulty: Easy
  • Cuisine: American
  • Allergens:
    Gluten Milk Wheat
Beginner friendly Freezer friendly Kid friendly

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