Quick Tomato Soup With Grilled Cheese
Updated December 29, 2025
- Total Time
- 30 minutes
- Rating
- Comments
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Ingredients
FOR THE TOMATO SOUP
1 (28-ounce) can whole peeled tomatoes
¾ cup chicken or vegetable broth, plus more as needed
1 large yellow onion, coarsely chopped
4 tablespoons unsalted butter
1 ½ teaspoons dried oregano
1 teaspoon granulated sugar
Salt and black pepper
FOR THE GRILLED CHEESE
Mayonnaise
8 slices brioche or milk bread, crusts removed
1 cup shredded low-moisture mozzarella (4 ounces)
¼ teaspoon dried oregano
2 tablespoons unsalted butter
Preparation
- Step 1
Make the soup: Dump the canned tomatoes and their juices into a medium pot and, using your hands, tear into coarse chunks. Swish the broth in the empty tomato can and add to the pot.
- Step 2
Stir in the onion, butter, oregano and sugar, and season generously with salt and pepper. Turn the heat to high and bring to a simmer. Reduce the heat to medium-low, cover and continue simmering, stirring occasionally, until the onion is tender and the tomatoes have broken down, 15 to 20 minutes.
- Step 3
Meanwhile, make the sandwiches: Spread a thin layer of mayonnaise on one side of each of the bread slices. Evenly sprinkle four of the slices with cheese and a little oregano. Top with the cheeseless slices, mayonnaise-side down.
- Step 4
Melt 1 tablespoon butter in a large skillet over medium. Add the sandwiches and cook until golden brown on the bottoms, 2 to 3 minutes. Melt the remaining tablespoon of butter in the pan, then flip the sandwiches with a spatula, move them around to coat with the butter and cook until the other side is golden brown and the cheese is melted, 1 to 2 minutes. Turn heat to lowest setting to keep sandwiches warm.
- Step 5
Carefully purée the tomato soup using a blender until smooth and creamy, adding more broth if needed to loosen to your desired consistency. Season with salt and pepper. Transfer the grilled cheeses to a cutting board and cut each in half diagonally. Serve alongside the soup.
Private Notes
Comments
I always sauté onions first when Making soup. Only takes a few Minutes and you get richer flavor.
But WHY would you cut the crusts off? That's the best part of grilled cheese this is madness
I use mustard instead of mayonnaise. It’s healthier and enhances the cheese flavour. The Swiss eat their Gruyère sandwiches with mustard.
Pretty fabulous. My only “swap” was to put the mayo side of the bread on the outside. Crisped up wonderfully in the cast iron and didn’t have to use my Irish butter.
My fresh tomato soup is way better and does not take longer. Chop 1 onion 1 carrot 1 potato and cook in 1 T any fat in wok or deep pot until soft, adding water as needed. Chop 2 tomatoes, mix with 1 tsp salt, and let rest while the veggies cook. Add, stir until they break down, puree with stick mixie. Thin with water so you have two servings, adjust seasonings.
This soup was AMAZING! I did take advice of other commenters and sauted the onions for a few minutes before adding the tomatoes. I also added a swirl of heavy cream. So delicious and very easy recipe for busy nights... highly recommend!

