Leek and Lemon Soup

1 Tbsp olive oil 1/2 cup onion 2 large leeks 3 cups chicken or vegetable broth 4 cups spinach leaves 1/2 cup diced parsley 1 lemon, zest 1/2 cup lemon juice, fresh Heat a medium pot over medium heat. Add the oil, onions and leeks. Saute for 3 minutes, stirring occasionally. Add the broth and…