Indulging in a warm bowl of Parmesan Basil Tomato Soup is one of life’s simple pleasures, especially on a chilly day. This hearty soup invites you to relax with its rich flavors and delightful aromas wafting through the kitchen. Perfect for family dinners or a cozy lunch, it’s a dish that leaves everyone feeling comforted and satisfied. Whether you’re serving it as a light meal or alongside a crusty grilled cheese sandwich, this slow cooker recipe makes it easier than ever to enjoy delicious homemade soup.
What Makes This Special
This Parmesan Basil Tomato Soup (Slow Cooker) stands out for several reasons:
- Rich, deep flavors enhanced by roasted garlic and sun-dried tomatoes
- The slow cooker makes preparation a breeze, allowing flavors to meld beautifully
- Fresh basil adds a vibrant touch and elevates the dish’s complexity
- A creamy texture that wraps around your taste buds wonderfully
- Perfect for batch cooking, providing easy leftovers for future lunches
Gather These Ingredients
Before diving into your culinary adventure, gather the essential ingredients. Each one plays a crucial role in building the lovely, robust flavors of this soup. Here’s what you’ll need:
- 2 tablespoons butter
- 1 cup chopped onions
- 2 diced carrots
- 1 (15 ounce) can tomato sauce
- 2 (28 ounce) cans San Marzano tomatoes
- ¼ cup each of roasted garlic cloves and sun-dried tomatoes
- 1 tablespoon sugar
- ¼ teaspoon dried basil
- ½ teaspoon Italian seasoning
- 4 cups broth (vegetable or chicken)
- 1 parmesan rind (optional)
- 1 bay leaf
- 3 tablespoons basil pesto
- 2 tablespoons balsamic vinegar
- 1 cup packed fresh basil leaves
- 1-2 cups half and half
- Parmesan cheese + grilled cheese sandwich (to serve)
These ingredients work in harmony, creating a delightful balance of flavors that will keep your taste buds dancing.
How to Cook Parmesan Basil Tomato Soup (Slow Cooker)
Creating this amazing soup is as easy as following these simple steps:
- In a large skillet over medium heat, melt the butter. Once melted, add the chopped onions and cook until they start to become translucent, about 2-3 minutes.
- Next, add the diced carrots to the skillet and continue cooking for an additional 1-2 minutes, stirring frequently to ensure they cook evenly.
- Transfer the sautéed vegetables into a 6-quart slow cooker or larger.
- Pour in the tomato sauce, both cans of San Marzano tomatoes, roasted garlic, sun-dried tomatoes, sugar, dried basil, Italian seasoning, and broth. Add the optional parmesan rind and bay leaf as well.
- Stir in the basil pesto and balsamic vinegar, then cover the slow cooker. Cook on the low setting for about 6-8 hours for the best flavor, or on high for 3-4 hours for a quicker meal.
- When the cooking time is up, fish out the bay leaf and the parmesan rind. Add the fresh basil leaves, stir to combine, and using an immersion blender, blend the soup until smooth or to your desired consistency. If you don’t have a stick blender, carefully transfer the soup in batches into a regular blender.
- Stir in 1 cup of half and half, then taste. If you’d like a creamier soup, feel free to add more half and half to reach your desired richness.
- Finish by topping each bowl with freshly grated parmesan cheese and serve hot with a side of grilled cheese or cheese croutons.
Prep ~ 15 minutes, Cook ~ 6-8 hours, Total ~ 6-8 hours 15 minutes, Servings ~ 6-8, Kcal ~ 280 per serving (estimate).
Make-Ahead and Prep Tips
One of the beauties of this Parmesan Basil Tomato Soup is that you can easily prepare many components ahead of time. You can chop the vegetables and store them in the refrigerator for up to a day before cooking. You can also measure out the other ingredients, making the process faster when you’re ready to start cooking. Additionally, the soup can be prepared entirely in advance and frozen for later enjoyment. Just make sure to store it in an airtight container.

Storing and Reheating
Leftover soup can be stored in the fridge for 3-4 days. For longer preservation, freeze the soup in portions, which can last up to 3 months. To reheat, gently warm the soup on the stovetop over low heat, stirring occasionally. If you’ve frozen it, allow the soup to thaw in the refrigerator overnight before reheating. A great cue for freshness is the scent—if it smells delightful, you’re in for a treat!
Perfect Pairings
This Parmesan Basil Tomato Soup is delicious on its own, but here are some delightful accompaniments:
- Grilled cheese sandwiches—classic comfort food that pairs beautifully
- Cheese croutons—crispy and cheesy bites that enhance each spoonful
- A simple mixed green salad—adds a fresh and crunchy element to your meal
- Crusty baguette slices—perfect for dipping into the rich soup
- A drizzle of balsamic glaze for an extra flavor boost
Variations and Swaps
Feel free to customize this slow cooker soup to fit your taste preferences:
- Add protein: stir in cooked ground chicken or turkey sausage for a heartier meal.
- Spice it up: add red pepper flakes or a dash of hot sauce for a bit of heat.
- Go vegan: substitute half and half with coconut milk for creaminess and use vegetable broth.
- Experiment with herbs: try adding thyme or oregano for different aromatic profiles.
- Swap the cheese: incorporate different cheese options like goat cheese for a tangy twist.
Pro Tips for Best Results
- Skip the canned tomatoes: if you have fresh tomatoes, roasting them first will add a wonderful depth of flavor.
- Blend with care: when pureeing, leave some chunks for a delightful texture contrast.
- Don’t rush the cooking: the longer the soup simmers, the richer the flavor will be.
- Serve hot: serving the soup hot enhances its aroma and overall comfort.
- Adjust seasoning: remember to taste while cooking and adjust seasonings to your preference.
Frequently Asked Questions
-
Can I use different tomatoes?
Yes, while San Marzano tomatoes are preferred for their sweetness, you can use regular canned tomatoes if that’s what you have. -
What if I don’t have a slow cooker?
This can easily be made on the stovetop; just simmer the ingredients over low heat for a couple of hours, stirring occasionally. -
Can I make this soup dairy-free?
Absolutely! Simply replace the half and half with a dairy-free cream or coconut milk and skip the cheese. -
How can I thicken the soup?
Blending more of the soup will naturally thicken it. Alternatively, you can add a cornstarch slurry during cooking. -
What other herbs can I add?
Fresh thyme or oregano can be wonderful additions to enhance the flavor of your soup.
Wrapping Up
There’s nothing quite like a comforting bowl of Parmesan Basil Tomato Soup (Slow Cooker) to brighten your day. This recipe not only simplifies dinner but elevates it with rich flavors and nourishing ingredients. The harmonious blend of herbs and tomatoes, culminating in a luscious creamy texture, is sure to become a favorite. So gather your ingredients and start your slow cooker—the soup of your dreams awaits! If you enjoy this recipe, you might also love trying out Creamy Parmesan Italian Sausage Ditalini Soup or Crock Pot Creamy Chicken Parmesan Soup for more comforting soup options! Enjoy your cooking!
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Parmesan Basil Tomato Soup (Slow Cooker)
- Total Time: 375 minutes
- Yield: 6-8 servings 1x
- Diet: Vegetarian
Description
A comforting slow cooker soup featuring rich flavors of tomatoes, roasted garlic, and fresh basil, perfect for chilly days.
Ingredients
- 2 tablespoons butter
- 1 cup chopped onions
- 2 diced carrots
- 1 (15 ounce) can tomato sauce
- 2 (28 ounce) cans San Marzano tomatoes
- ¼ cup roasted garlic cloves
- ¼ cup sun-dried tomatoes
- 1 tablespoon sugar
- ¼ teaspoon dried basil
- ½ teaspoon Italian seasoning
- 4 cups broth (vegetable or chicken)
- 1 parmesan rind (optional)
- 1 bay leaf
- 3 tablespoons basil pesto
- 2 tablespoons balsamic vinegar
- 1 cup packed fresh basil leaves
- 1–2 cups half and half
- Parmesan cheese (for serving)
- Grilled cheese sandwich (for serving)
Instructions
- Melt the butter in a large skillet over medium heat. Add the chopped onions and cook until translucent, about 2-3 minutes.
- Add the diced carrots and continue cooking for an additional 1-2 minutes, stirring frequently.
- Transfer the sautéed vegetables to a 6-quart slow cooker.
- Pour in the tomato sauce, both cans of San Marzano tomatoes, roasted garlic, sun-dried tomatoes, sugar, dried basil, Italian seasoning, and broth. Add the optional parmesan rind and bay leaf.
- Stir in the basil pesto and balsamic vinegar, cover the slow cooker. Cook on low for about 360-480 minutes, or on high for 180-240 minutes.
- Remove the bay leaf and parmesan rind. Add the fresh basil leaves, stir to combine, and use an immersion blender to blend the soup until smooth or to your desired consistency.
- Stir in 1 cup of half and half, and adjust the creaminess with more if desired.
- Top each bowl with freshly grated parmesan cheese and serve hot with grilled cheese or cheese croutons.
Notes
You can prepare components ahead of time and store chopped vegetables in the refrigerator for up to a day. Soup can be frozen in portions for up to 3 months.
- Prep Time: 15 minutes
- Cook Time: 360 minutes
- Category: Soup
- Method: Slow Cooker
- Cuisine: Italian
Nutrition
- Serving Size: 1 serving
- Calories: 280
- Sugar: 5g
- Sodium: 750mg
- Fat: 15g
- Saturated Fat: 8g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 5g
- Protein: 7g
- Cholesterol: 30mg
Keywords: soup, slow cooker, tomato soup, vegetarian, comfort food




