Name: Thick and Smoky Vegetarian Split Pea Soup Recipe
Prep time: 15 min
Cook time: 50 min
Total time: 65 min
Ingredients: 2 cups dried green split peas, rinsed; 1 large onion, diced; 2 carrots, diced; 2 celery stalks, diced; 4 cloves garlic, minced; 1 small potato, peeled and diced; 2 tbsp olive oil; 6 cups vegetable broth; 1 bay leaf; 1 tsp dried thyme; 1 tsp smoked paprika; 1 tbsp tomato paste; 1/4 tsp liquid smoke (optional); 1 tbsp lemon juice or apple cider vinegar; Salt and black pepper, to taste

This vegetarian split pea soup is every bit as hearty and satisfying as the ham-bone version, with rich smoky depth that comes entirely from plant-based ingredients. It’s thick, warming, and tastes like it simmered all day.

A bowl of this is what cold nights are made for. And because it relies on pantry staples, you can pull it together anytime you want something substantial without much fuss.

Why This Soup Works

I love that this split pea soup gets its smokiness from smoked paprika and just a drop of liquid smoke, never from meat. The result is a velvety texture that happens naturally as the peas break down.

Carrots and celery melt into the broth, and a potato adds extra body so each spoonful feels rich and full. It’s proof that a vegetarian soup can be as cozy and deep-flavored as any classic.

Ingredients

2 cups dried green split peas, rinsed: no need to soak; they soften and fall apart as they simmer.
1 large onion, diced: yellow or white onion both work.
2 carrots, diced: no need to peel if they’re well scrubbed.
2 celery stalks, diced: adds a savory backbone.
4 cloves garlic, minced: use fresh for the best flavor.
1 small potato, peeled and diced: helps create a creamy, thick texture.
2 tbsp olive oil: for sautéing the vegetables.
6 cups vegetable broth: use a good low-sodium broth so you can control the salt later.
1 bay leaf: tuck it in whole and remove before blending.
1 tsp dried thyme: or 1 tbsp fresh thyme leaves.
1 tsp smoked paprika: this is what gives the soup its bacon-like smokiness.
1 tbsp tomato paste: adds a subtle richness.
1/4 tsp liquid smoke: optional, but it delivers that unmistakable ham-like note.
1 tbsp lemon juice or apple cider vinegar: stirred in at the end to brighten the whole pot.
Salt and black pepper: season to taste after cooking.

Variations / Substitutions

Swap the potato: use a sweet potato for a slightly sweeter, earthier soup.
No liquid smoke: double the smoked paprika and stir in 1 tsp soy sauce for extra umami.
Herb swap: use rosemary instead of thyme if you prefer a woodsier note.
Make it spicy: add a pinch of cayenne or a diced jalapeño along with the onions.
Dairy-free: the recipe is already naturally dairy-free, just be sure your vegetable broth contains no milk solids.

If you like this soup, try my lentil and vegetable stew for another hearty, protein-packed meal.

How to Make Thick and Smoky Vegetarian Split Pea Soup

Step 1: Sauté the Aromatics

Heat the 2 tbsp olive oil in a large heavy pot or Dutch oven over medium heat. Add the diced onion, carrots, celery, and potato, and cook for about 6 minutes, stirring often, until the vegetables soften but don’t take on much color.

The smells at this stage are sweet and earthy, and that’s exactly what you want. Give everything enough time to release its moisture so the base of the soup starts off sweet, not sharp.

Step 2: Bloom the Spices

Stir in the 4 cloves minced garlic, 1 tbsp tomato paste, 1 tsp smoked paprika, 1 tsp dried thyme, and the 1/4 tsp liquid smoke if using. Cook for 1 minute, stirring constantly, until the tomato paste darkens a shade and the spices smell deeply fragrant.

You’ll see the paste turn from bright red to a brick red. That quick bloom locks the smoky, savory notes into every bite of the finished soup.

Step 3: Simmer the Soup

Pour in the 6 cups vegetable broth, then add the 2 cups rinsed split peas and the bay leaf. Bring the pot to a boil over high heat, then reduce the heat to low, cover partially with a lid, and simmer for 45 to 50 minutes.

As the soup cooks, the peas will gradually soften and the broth will turn a cloudy, pale green. The potato will start to break apart and thicken the liquid around it, so give it a stir every now and then.

Step 4: Blend for Texture

Once the peas are completely tender and starting to fall apart, turn off the heat and remove the bay leaf. Use an immersion blender to partially blend the soup right in the pot, leaving some whole peas and bits of vegetable for a rustic texture. Blend for about 10 to 15 seconds, or a little longer if you prefer a smoother soup.

The soup should look creamy but still have some visible chunks. If you blend it completely smooth it turns more like a puree, which is fine, but I like a little contrast in each bowl.

Step 5: Ladle and Serve

Stir in the 1 tbsp lemon juice and season with salt and black pepper to taste. Ladle the soup into deep bowls and serve while it’s steaming hot.

A slice of crusty bread alongside is almost a requirement. The lemon juice wakes up all the smoky, earthy flavors and makes the soup taste impossibly rich without any meat.

A Few Notes Before You Start

Use a broth you like the taste of. A weak vegetable broth makes a weak soup, so go with one you’d happily sip on its own.
Hold off on the salt until the peas are cooked. Adding salt too early can toughen the pea skins and slow down how quickly they soften.
No immersion blender?: Carefully transfer about 2 cups of the soup to a stand blender, blend until smooth, then stir it back into the pot. Only fill the blender halfway and hold the lid with a towel to avoid hot splashes.
Add a handful of fresh parsley or spinach: in the last 5 minutes of cooking for a greener, brighter finish.

Storing and Reheating Leftovers

Refrigerate: Store in an airtight container in the fridge for up to 4 days. The soup will thicken quite a bit as it sits.
Reheating: Warm gently in a pot over medium-low heat, adding a splash of vegetable broth or water until the consistency looks right to you again.

What to Serve With Thick and Smoky Vegetarian Split Pea Soup

Crusty bread is a natural partner: it sops up every last bit of the thick broth. A simple green salad with a sharp lemony vinaigrette cuts through the richness and adds a fresh contrast. For a true comfort-food dinner, serve it alongside a grilled cheese sandwich made with sharp cheddar on sourdough.

Frequently Asked Questions

Can I make this soup in a slow cooker?

Yes. Sauté the vegetables and spices on the stovetop first, then transfer everything to the slow cooker with the broth and peas. Cook on low for 6 to 8 hours, then blend and season as directed.

Can I use yellow split peas instead of green?

Absolutely. Yellow split peas have a milder, slightly nuttier flavor and cook in the same amount of time, so no adjustments are needed.

Is this soup gluten-free?

Yes, as long as you use a vegetable broth that is certified gluten-free, all the ingredients are naturally free of gluten.

Can I freeze the leftovers?

Yes. Portion the cooled soup into freezer-safe containers and freeze for up to 3 months. Thaw overnight in the fridge and reheat gently with a little broth.