Slow Cooker Recipe: Tomato Soup ⋆ Design Mom (2024)

By Gabrielle. Photos by Lindsey of Café Johnsonia.

[ Update: Grilled Cheese with Pesto recipe added. ]

When I lived in New York, my friend Sara invited me to lunch at her house, and while we chatted she made grilled cheese sandwiches and warmed up a yummy box of tomato soup from Trader Joes. I adore this meal. It’s on my list of comfort meals for sure. But until Sara served it to me, I had considered it too plebian or boring for guests.

Slow Cooker Recipe: Tomato Soup ⋆ Design Mom (2)

I had a lovely shift in thinking that day. Why wouldn’t I serve this comforting, beloved meal? And why stress out about a fancy meal, when I can be relaxed and enjoy my company — and serve a known crowd-pleaser at the same time?All of sudden, I could invite people over for lunch and it didn’t have to be a big deal. Which means I was more likely to invite someone over in the first place!

Slow Cooker Recipe: Tomato Soup ⋆ Design Mom (3)

I hope it’s safe to say, most people love tomato soup and grilled cheese sandwiches. It’s definitely a favorite around our house. I can tell you I truly don’t raise my eyebrows at boxed soup, but in an effort to eat more whole foods, we have been trying to make more things from scratch. So for today’s recipe in my Slow Cooker Series, it’s all about Homemade Tomato Soup. That said, this soup is made with canned tomatoes. : ) Once summertime arrives, you can switch out fresh-from-the garden tomatoes. But for now this works. It’s pretty much one of those put everything into the slow cooker kinds of recipes, set it and forget it.

I’m always feeding a crowd, so I included a recipe to feed 10-12. If you have a smaller family, don’t worry, just halve all of the ingredients. However, I will say the leftovers don’t go to waste! They are great to send in a lunch box or pull out for a quick meal the next day.

Slow Cooker Tomato Basil Soup
Adapted slightly from Big Girls, Small Kitchen.
Makes 10-12 servings

Ingredients:
3 large carrots, peeled and roughly chopped
2 celery stalks, diced
2 medium sweet onions, roughly chopped
4 cloves garlic, peeled and left whole
2-3 teaspoons salt (start with less and add to taste)
1/4 teaspoon fresh ground black pepper
4 (28-ounce) cans whole peeled tomatoes
1 quart low-sodium organic free-range chicken broth
1/4 to 1/2 cup fresh basil leaves, roughly chopped, plus more for garnish
half and half or heavy cream (optional)
Freshly grated Parmesan (for garnish, optional)

Slow cooker Version:
Place all of the ingredients, except for half and half and Parmesan into a very large slow cooker. Top with the lid and cook on high for 4 hours or low for 5-7 hours. The vegetables should be very soft at that point. If not, cook for another hour or so.

Use an immersion blender to puree the soup. Alternatively, work in batches and puree soup in traditional blender. Be extra careful and don’t fill the blender too full, or it will splatter and escape from the lid.

To the pureed soup, add the half and half. Taste and add more salt and pepper, if needed. Ladle into bowl and sprinkle with freshly grated Parmesan and extra basil.

Serve with biscuits, hot rolls, grilled cheese sandwiches, or breadsticks and a large green salad.

Stove-top Version:

Combine all ingredients in a heavy lidded pot or Dutch oven over medium-high heat. Bring to a boil, then turn heat down to low, and simmer, covered, for about 2 hours, until flavors are blended and vegetables are soft. Allow the soup to cool slightly. Then puree in batches in a blender until very smooth. If you like a thinner consistency, add a little bit more stock or water. Serve immediately, or transfer the soup back to the pot and keep on low until your guests arrive.

Garnish with more fresh basil and some grated Parmesan cheese.

Slow Cooker Recipe: Tomato Soup ⋆ Design Mom (5)

Pesto Grilled Cheese Sandwich
To make about 6-8 sandwiches

Note – this pesto has much less oil than traditional recipes so it doesn’t saturate through the bread and make it soggy. Add just enough to make it spreadable.

Ingredients:
1 large loaf sourdough or another kind of bread, sliced
1 lb. mozzarella, sliced
Butter, for cooking
4 cups fresh basil leaves
1/4 cup pine nuts
1/4 cup grated Parmigiano-Reggiano
1-2 garlic cloves
2-4 Tablespoons extra virgin olive oil

Instructions:
1. Have a large skillet or griddle ready.

2. Prepare pesto — place basil, pine nuts, Parmigiano-Reggiano, and garlic in a food processor. Pulse until finely chopped. Add the olive oil a little at a time through the feed hole while pulsing. Scrape down sides as needed.

3. Lay all the bread slices open and place the sliced mozzarella on half of the bread slices. On the other half, spread a little of the pesto. Close the sandwiches and spread butter on the outside of every sandwich.

4. Heat the skillet or griddle to medium-high heat and cook the sandwiches until golden on each side, lowering the heat if necessary so they don’t burn. Serve immediately.

P.S. — Find all the recipes in this series here.

Slow Cooker Recipe: Tomato Soup ⋆ Design Mom (2024)

FAQs

What can I put in tomato soup to make it taste better? ›

10 Simple Ingredients to Add to Tomato Soup
  1. 1) Fresh Rosemary. Kicking off the list is the simplest way to jazz up your tomato soup – fresh herbs. ...
  2. 2) Sauteed Onions. ...
  3. 3) Crispy Bacon. ...
  4. 4) Cream. ...
  5. 5) Chutney. ...
  6. 6) Melted Cheese. ...
  7. 7) Tinned Anchovies. ...
  8. 8) Toasted Pine Nuts.
Mar 21, 2022

How do you thicken homemade tomato soup? ›

You can thicken soup by adding flour, cornstarch, or another starchy substitute. For the best results, never add flour or cornstarch directly to your soup. If you do, it will clump up on top. Instead, ladle a small amount of broth into a separate bowl and let it cool.

How to make tomato soup more filling? ›

Shredded chicken

We've got a solution for you: Shred it up and add it to your canned tomato soup. On its own, there's not much in canned tomato soup that's going to keep you full for very long, so adding some protein is a great way to make your soup more filling — and more satisfying on the flavor front.

What spices to add to canned tomato soup? ›

In a saucepan, combine tomato soup and 1 can full of milk of choice or heavy cream. Add garlic powder, onion powder, Italian seasoning, cayenne pepper, salt, and black pepper and let sit on medium-low heat for about 10 minutes. Pour into bowls and top with parmesan cheese and fresh basil.

Why is my tomato soup so bland? ›

If your tomatoes are not ripe or lacking in flavor, it can result in a less vibrant soup. Store-bought brands may use tomatoes processed at their peak ripeness. Seasoning: Homemade soups often require proper seasoning with salt, pepper, and other.

How do you get the tartness out of tomato soup? ›

Many sources recommend adding a pinch of baking soda to a sauce that's overly tart, which raises the pH and makes it less acidic. We've always preferred adding a bit of sugar.

Why does my tomato soup have no flavor? ›

This tip comes from food science. Add a small spoonful of sugar to enhance the natural sweetness of the tomatoes. Season with salt in all of the steps (starting with the sauteed onions). This ensures your tomato soup is never bland.

What is the difference between tomato soup and tomato bisque? ›

While both are delicious, they are quite different, especially when it comes to the texture. Tomato bisque is thicker and creamier in texture, and calls for the use of milk and/or cream.

Why add flour to tomato soup? ›

Tomato soup can be a bit thin, especially with the addition of cream at the end of cooking, so flour is added to the sautéing aromatics to thicken the soup.

Why do you put baking soda in tomato soup? ›

And the combination of baking soda and sugar completely eliminates the tomatoes' acidity, allowing their rich flavor to shine through.

Is milk better than water for tomato soup? ›

You can use either depending on your taste. Water is perfectly fine but using milk will make the end product much richer. With most brands, you can use either option. Milk makes the tomato soup creamier, and it tastes better, that way.

Should I drain canned tomatoes before adding to soup? ›

Don't be hatin' on canned tomatoes. They make really amazing tomato soup and are available all year long! The key to this recipe is to drain the juice from the diced tomatoes. You'll use both the juice AND the tomatoes, but separating them helps build layers of flavor as you'll see in a minute.

What seasoning brings out tomato flavor? ›

While basil, cilantro, and oregano are all popular herbs to pair with Tomatoes, there are many more options to choose from! If you want to experiment with more herbs, here are a few extra options that taste great with Tomatoes: Parsley. Dill.

What are the ingredients in tomato soup can? ›

WATER, TOMATO PUREE (WATER, TOMATO PASTE), SUGAR, WHEAT FLOUR, VEGETABLE OIL (CORN, CANOLA, AND/OR SOYBEAN), CONTAINS LESS THAN 2% OF: SALT, POTASSIUM SALT, WHEY PROTEIN CONCENTRATE, CREAM, CITRIC ACID, SOY PROTEIN CONCENTRATE, NATURAL FLAVORING, CELERY EXTRACT, GARLIC OIL.

How to add more tomato flavor to tomato soup? ›

For the most intense tomato flavor, include a couple tablespoons of tomato paste. To get the most out of it, add it to the pan when aromatics like onion and garlic are softened, but before adding the tomatoes. Let the paste cook, stirring frequently, for a few minutes, or until it starts to darken in color.

What can I add to my soup to make it tastier? ›

Use fresh vegetables, high-quality meats or broth, and fresh herbs to add depth of flavor. Add acidity: A squeeze of lemon or lime juice, a dash of vinegar, or a splash of wine can brighten the flavors of a soup and make it taste more complex.

How do you balance tomato flavor in soup? ›

How To Cut The Acidity In Tomato Soup
  1. Add a pinch of sugar. ...
  2. Balance with dairy products. ...
  3. Try a dash of vinegar. ...
  4. Incorporate roasted vegetables. ...
  5. Use low-acid tomatoes. ...
  6. Balance with herbs and spices. ...
  7. Cook with a bit of baking soda.
Mar 5, 2024

How do you make tomato soup taste less like tomato sauce? ›

It's a bit acidic for me, too, so when I have tomato soup, I add some half-and-half or heavy cream. I'd try that before adding a small amount of sugar, which is what I do when I make tomato sauce. And add some Saltines (soda crackers) on top for a little crunch.

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