This gluten free Leek and Split Pea Soup with Pistou is a hearty winter soup packed with flavour and fibre. That makes it a great choice for cooks wanting more healthy meal ideas. Look for new high fibre recipes and try them and add the best ones to your meal rotation. This is a strategy for every category of food. It adds variety to your everyday meals and changes with the seasons.

I love to serve warm buttermilk biscuits or cheese biscuits with any hot soup. If you're in the yeast bread camp, soft buttery dinner rolls take more time but they're always wonderful.
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Ingredients
Pistou is French pesto, probably made with fresh basil. For me, this recipe is so old it was made with dried basil. Surely it would be fabulous with fresh basil but I've been making it as written for so long I just haven't got around to trying that.
- Leeks - More mild than onions and a nice way to use them.
- Italian sausage - Support a local supplier who makes gluten free sausage. In Calgary mine is Spolumbo.
- Carrots, potatoes & green beans - This is a veggie forward soup and I like that. Since it's a winter soup I'll be using frozen green beans.
- Gluten free chicken stock - A pantry staple but ingredient lists change so fast I stick to brands with a gluten free certification logo.
- Split peas - Buying dried or canned legumes is a mindset shift. Learning to substitute and use what you have is something you can definitely learn.
- Tomato paste - Not all pistou recipes use tomato but this one does.
- Parmesan cheese - Where would we be without Parm.
- Dried parsley & basil - Fresh or fabulous but I never apologize for using dried herbs.
See recipe card for complete ingredient list and exact amounts.
Fun Food Facts: Legumes vs Pulses
Legumes are high in fibre and excellent for every diet, that's all you need to know. Fun Food Facts are for foodies and wanna be foodies.
- Legumes refer to plants whose fruit is enclosed in a pod. Fresh beans, including soybeans, peas and peanuts are all legumes. Alfalfa and clover are also legumes but I cannot picture either of them in my kitchen.
- Pulses are in the legume family and refer to the dried seed of the legume plant. Dried peas (like split peas), edible beans (kidney beans and black beans), lentils and chickpeas all came from a pod so are all pulses.
Instructions
Split peas - Split peas do not need to be soaked. When peas and beans are hulled and split they cook is less time, usually under an hour. Don't pass over recipes because you think they need to soak for 8 hours. Learn about them and find recipes you love.
Avoid overcooking - It's easy to let your soup bubble away for longer than intended. Stick with the suggested times and enjoy the texture and flavour of all the ingredients.
Pistou - As it says in the recipe, stir it all in at once or dollop it on each serving for the full effect of the aroma as it melts into the bowl in front of you.
Substitutions & Variations
Split Peas - Substitute with a can of lentils in this recipe. Rinsing them decreases the excess sodium and starch. FYI, canned legumes cause less gas and bloating than dried.
Sausage - Substitute with your favourite sausage or omit it for a vegetarian version and use vegetable stock instead of chicken.
Leeks - Substitute with regular cooking onions.
Herbs - I use dried herbs in the pistou. For a fresh tasting variation substitute fresh parsley and basil. For every 1 teaspoon of dried herbs use 1 tablespoon of fresh, that three times the amount.
Soup - This is cooking, not baking, so make any substitution and variations you want. I try to stick as close to the original recipe the first time I make it to taste the combination the person sharing it intended. Then change it to your liking.
Get The Tools
For the everyday home cook like me, the largest pot in a typical set of pots is perfect for making soup. A real Dutch oven like the Le Creuset enamelled cast iron pot is worth the investment (if you can lift it) and a fabulous gift. They're heavy and expensive but will last a lifetime. For a fraction of the cost you can buy a lesser quality enamelled cast iron Dutch oven and I’m pretty sure it will last for decades too.
Top Tip
If you don't have a long list of favourite homemade soups yet, check out my Year of Soup recipe roundup. Work on your own Year of Soup list by trying new recipes throughout the year. Tape the list to the inside of a cupboard door you open often, reprint as you update it. Then move on to your Year of Legumes.
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New here? Overwhelmed or frustrated with gluten free? Get started with this guide to understanding gluten free flour. I guarantee, you can learn to cook gluten free food everyone wants to eat.
🎉 Exciting news! Adventures in a Gluten Free Kitchen, a membership for gluten free cooks who want to learn together, is here. Click to learn more!
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Leek Split Pea Soup with Pistou (gluten free)
Ingredients
- 3 leeks
- 8 oz Italian sausage
- 1 cup chopped carrots
- 1½ cups thinly sliced potatoes
- 4 cups gluten free chicken stock
- 2 cups water
- ½ cup split peas, rinsed see notes
- 8 oz frozen green beans cut into 1” pieces
PISTOU SAUCE
- 4 cloves garlic, minced
- 1 can tomato paste (6 oz/156 ml)
- ¾ cup Parmesan cheese
- 4 teaspoon dried parsley
- 1½ tablespoon dried basil
- ⅓ cup olive oil
Instructions
- Cut root and green top off leeks. Cut lengthwise and rinse under water to remove dirt. Slice thinly.
- Heat oil in a large pot over medium high heat. Cook sausage turning, until browned on all sides. Remove sausage and cut in half lengthwise, then slice to desired thickness. Return sausage to the pot and add leeks and carrots. Cook stirring for 5 minutes until leeks are limp.
- Add potato, chicken stock, water and split peas. Simmer covered until split peas are soft, about 40 minutes.
- Add green beans to soup, simmer covered for 10 minutes until beans are cooked.
French Pistou Sauce
- Combine all pistou ingredients in a small bowl. Add to soup as desired.
Finishing
- Mix all the pistou into the soup, stir until combined and serve. Alternately, top each bowl of soup with a generous dollop of pistou and let everyone swirl it into their soup and enjoy the aroma from the bowl in front of them.



















Julie Clarry
Cinde, thanks for this amazing recipe. Made it the other day and WOW delicious. Love these one pot meals! I was a bit worried about the tomato paste not cooking too long but this Pistou sauce took the soup to another level. This will definitely be one of our regulars.
Cinde Little
Thanks Julie, I'm so glad you liked this soup. We've heard about Italian pesto for years and all kinds of variations for it. Yet for whatever reason I never hear about French pistou sauce. This is the only pistou I've even made and like you said, it takes this soup to another level. Enjoy!