Vegan Slow Cooker Tomato Basil Soup

Total time4 hr 15 min

Prep time15 min

Cook time4 hr

This slow cooker soup builds deep, rich tomato flavor with almost no hands-on effort — just softened onion and garlic simmered low and slow with crushed San Marzano tomatoes, diced tomatoes, tomato paste, and a good hit of oregano and red pepper flakes. Fresh basil gets blended right into the pot for that unmistakable herby brightness, and an immersion blender takes it from chunky to silky in seconds. A touch of sugar balances the acidity of the tomatoes, while salt and pepper get dialed in to taste at the end. It's the kind of soup that tastes like it simmered on a stovetop all day, ladled into bowls and finished with a few more basil leaves on top. Pair it with crusty bread for dunking, and you've got a comforting, tomato-forward bowl that fits easily into a plant-based rotation.

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Ingredients

6 servings

2 tbsp unsalted butter
Country Crock Dairy Free Plant Butter Made With Olive Oil Miyoko's Creamery Plant Milk European Style Salted Butter, 8 oz Earth Balance Vegan Buttery Sticks Violife 100% Vegan Unsalted Plant Butter Country Crock Dairy Free Plant Butter with Avocado Oil
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Chef's tip
Use a stick or block-style dairy-free butter - not a soft tub spread - and swap one-for-one.
1 medium yellow onion, diced
4 cloves garlic, minced
2 cans (28 oz each) crushed san marzano tomatoes
1 can (14.5 oz) diced tomatoes
2 cups low-sodium chicken broth
Chef's tip
Use the same amount of low-sodium vegetable broth. The dish will be a little lighter in flavor than with chicken broth.
1 tbsp tomato paste
1 tsp dried oregano
½ tsp red pepper flakes
1 tsp granulated sugar
1 tsp salt, plus more to taste
½ tsp black pepper, plus more to taste
½ cup fresh basil leaves, loosely packed
½ cup heavy cream
Chef's tip
Use unsweetened dairy-free heavy cream in cooked sauces, soups, and ganache. For whipped uses, choose a product labeled whippable.

For serving

fresh basil leaves, for serving (optional)
crusty bread, for serving (optional)
Omit this
This ingredient likely doesn’t work for the diet.

Instructions

1
Melt the butter in a medium skillet over medium heat. Add the onion and cook, stirring occasionally, until softened and translucent, about 5 minutes. Add the garlic and cook, stirring constantly, until fragrant, about 1 minute. Watch the garlic closely so it does not brown.
2
Transfer the onion and garlic to a 5-quart or larger slow cooker. Add the crushed tomatoes, diced tomatoes, chicken broth, tomato paste, dried oregano, red pepper flakes, sugar, salt, and black pepper. Stir to combine.

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