Heat olive oil in a large pot over medium heat. Add onion, carrots, and celery. Cook 5–7 minutes until softened.
1 tbsp olive oil, 1 medium onion, 2 carrots, 2 stalks celery
Stir in garlic, thyme, smoked paprika, salt, and pepper. Cook for 1 minute until fragrant.
3 cloves garlic, 1 tsp thyme, ½ tsp smoked paprika, ½ tsp salt, ¼ tsp pepper
Add split peas, broth, and bay leaf. Bring to a boil, then reduce heat to low.
1 ½ cups green split peas, 6 cups vegetable broth, 1 bay leaf
Simmer uncovered for 60–75 minutes, stirring occasionally, until peas are soft and the soup has thickened. Add more broth or water if you prefer a thinner consistency.
Remove bay leaf. For a creamier texture, mash some of the soup with the back of a spoon or use an immersion blender for 2–3 quick pulses.
Stir in kale until wilted.
2 cups kale
Finish with a squeeze of lemon juice. Serve warm.
1 tbsp lemon