Go Back

Slow Cooker Creamy Tomato Basil Soup

This creamy soup combines fire-roasted tomatoes, aromatic garlic, and fresh basil, creating a comforting dish perfect for cozy evenings or gatherings.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 8 hours
Total Time 8 hours 20 minutes
Servings: 6 servings
Course: Appetizer, Soup
Cuisine: American, Comfort Food
Calories: 325
Ingredients Method Notes

Ingredients
  

Vegetables
  • 1 large onion, finely chopped Adding sweetness and depth.
  • 2 small carrots, diced Providing natural sweetness and texture.
  • 3 cloves garlic, minced For aromatic punch.
Main Ingredients
  • 2 lbs fire-roasted diced tomatoes (canned) Bursting with flavor, base of the soup.
  • 4 cups low-sodium vegetable broth Keeping the soup light yet flavorful.
  • 1 tbsp tomato paste Enhancing the natural richness.
  • ½ tsp dried oregano Bringing herby warmth.
  • ¼ tsp red-pepper flakes (optional) For a hint of heat.
  • to taste Salt and freshly ground black pepper Essential seasonings.
Finishing Touch
  • 1 cup heavy cream (or coconut milk for dairy-free) Adding a luscious creaminess.
  • 1 tbsp fresh basil, chopped Infusing the dish with freshness.
For Cooking
  • 2 tbsp extra-virgin olive oil For a rich flavor base.

Method
 

Prep the Vegetables
  1. Dice one large onion and two small carrots into bite-sized pieces, then mince three cloves of garlic. Toss together with 2 tablespoons of extra-virgin olive oil in a large bowl.
Layer the Slow Cooker
  1. Spread the seasoned vegetables evenly at the bottom of the slow cooker.
Add Tomatoes and Broth
  1. Pour in 2 lbs of fire-roasted diced tomatoes with juices, stir in 1 tbsp of tomato paste, and add 4 cups of low-sodium vegetable broth. Sprinkle ½ tsp of dried oregano and optionally add ¼ tsp red-pepper flakes. Season with salt and freshly ground black pepper to taste.
Slow Cook
  1. Cover the slow cooker and set it to LOW for 6-8 hours or HIGH for 3-4 hours.
Blend for Texture
  1. Using an immersion blender, blend the soup until it reaches desired consistency.
Creamy Finish
  1. Stir in 1 cup of heavy cream (or coconut milk) and 1 tbsp of chopped basil, heating on HIGH for an additional 5-10 minutes until steaming but not boiling.
Serve
  1. Ladle the warm soup into bowls and garnish with an extra drizzle of cream and additional basil. Serve with crusty bread or a fresh salad.

Notes

For the best flavor, use high-quality fire-roasted tomatoes. You can also add spinach or kale for extra greens, or more red-pepper flakes for heat. A splash of lemon juice before serving brightens flavors.