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

Can you give me the recipe for tomato soup? ›

Gather all ingredients. Combine tomatoes, chicken broth, garlic cloves, and a large slice of onion in a stockpot over medium heat. Bring to a boil, and gently simmer for about 20 minutes to blend flavors. Remove from heat and run the mixture through a food mill into a large bowl, or pan.

How to make tomato soup that doesn't curdle? ›

Baking soda allows you to use milk in your tomato soup recipe without it curdling. If you don't use baking soda, you'll need to use a higher-fat dairy to avoid it separating with the heat and acidic tomatoes.

What to 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

Do I need to peel tomatoes for soup? ›

If you've ever made a tomato soup and fished out some tomato skin, you know it's not always the most appealing texture. Sometimes, you want the smoothest, silkiest texture for a sauce or soup possible, and for those cases, it is ideal to use peeled tomatoes.

Are you supposed to put milk in tomato soup? ›

Heavy cream is the best way to get that classic creamy flavor we know and love. In its place I have tried, to no avail, every other dairy for creamy tomato soup: half-and-half works in a pinch, milk makes the soup too thin, and yogurt is too acidic.

Why do you put baking soda in tomato soup? ›

A small pinch of baking soda can help balance the pH levels and reduce the overall acidity. This can result in a milder and less tangy flavor, making the soup taste better! Also, if you want a tomato cream soup- it'll help prevent the milk from curdling when added!

How to add depth of flavour to tomato soup? ›

You can sauté minced garlic in a bit of olive oil before adding the canned sauce to release its flavors. Onion: Chopped or minced onions, whether white or red, can provide a subtle sweetness and depth of flavor. Sauté them before adding the tomato sauce. Basil: Fresh or dried basil is a classic herb t.

How do you get lumps out of tomato soup? ›

Make a slurry of water and cornstarch, then gradually add some liquid from the soup to the slurry. Add to the soup and heat gently, stirring so you can prevent any lumps forming and remove the soup from the heat when it reaches the thickness you desire.

Why does my tomato soup taste watery? ›

Tomatoes have a high water content, and the addition of broth and cold water can lead to a thin tomato soup, especially when you're making the dish in a slow cooker. Here are a few tips that will help you prevent a watery tomato soup: Drain the liquid from canned tomatoes.

Can you leave seeds in tomato soup? ›

You don't need to worry about removing the seeds if you're making a soup or sauce.

Why do you add baking soda to homemade tomato soup? ›

A small pinch of baking soda will tame any unwanted acidity in the soup.

How to make homemade tomato soup thicker? ›

How To Thicken Up Tomato Soup
  1. Add Tomato Paste. One of the easiest ways to thicken your tomato soup is by adding tomato paste. ...
  2. Use Flour or Cornstarch. ...
  3. Incorporate Bread. ...
  4. Utilize Heavy Cream or Yogurt. ...
  5. Blend or Puree. ...
  6. Add Vegetables or Beans. ...
  7. Simmer and Reduce.
Mar 5, 2024

Is canned tomato soup better with water or milk? ›

A soup made with milk is usually richer and more luxurious than one made with just water or stock. This addition helps make the soup feel more comforting. Adding milk or cream to a soup can balance contrasting tastes and help ingredients that don't typically mesh blend seamlessly.

What is the best combination with tomato soup? ›

18 Must-Try Toppings for Your Tomato Soup
  • Chicken.
  • Chickpeas.
  • Bacon Bits.
  • Basil.
  • Green Onion.
  • Quinoa.
  • Macaroni.
  • Grilled Cheese.

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