Indian-Spiced Chicken With Chickpeas And Spinach

Ingredients

• 1 tablespoon vegetable oil
• 6 bone-in chicken legs (thigh and drumstick), skin removed
• kosher salt
• 1 tablespoon unsalted butter
• 2 large onions, thinly sliced
• 4 garlic cloves, chopped
• 1 1/2 tablespoons grated peeled ginger
• 2 teaspoons ground coriander
• 2 teaspoons ground cumin
• 2 teaspoons ground turmeric
• 1/4 teaspoon cayenne pepper
• 1 15-ounce can chickpeas, rinsed
• 2 cups (or more) low-sodium chicken broth
• 5 ounces baby spinach (about 8 lightly packed cups)
• 1/4 cup greek yogurt
• 1/4 cup fresh cilantro leaves with tender stems