Slow Cooker Cauliflower Dal with Lentils & Split Peas

Ingredients

• 1/2 head cauliflower florets
• 1 large parsnip -- cut into 1/2-inch pieces
• 1 tart apple -- peeled and cut into 1/2 inch pieces
• 1 large leek -- white and light green parts (sliced thinly)
• 1 2- inch piece ginger root -- peeled and minced
• 1/2 cup brown lentils -- rinsed
• 1/2 cup split peas -- rinsed
• 1/2 cup steel-cut oats
• 1/2 cup barley
• 1 teaspoon ground cumin
• 1 teaspoon ground coriander
• 1/2 teaspoon ground turmeric
• 1 Anaheim pepper -- chopped
• 5 cups water
• 1 teaspoon Kosher salt
• 1 lemon -- juiced
• 1/4 cup chopped fresh cilantro leaves
• 1 tablespoon extra-virgin olive oil
• 1 1/2 teaspoons yellow mustard seeds
• 1 1/2 teaspoons caraway seeds
• extra cilantro for garnish
• plain Greek yogurt