Here’s one of my favorite it’s-a-rainy-day-and-I-am-low-on-groceries recipe: Green pea soup with toasted baguette slices. It’s a healthy, low fat, non-dairy recipe from Ellie Krieger, one of my favorite Food Network chefs. 1 teaspoon olive oil 1 large onion, sliced (about 1 1/2 cups) 2 1/2 cups low-sodium chicken broth 3/4 teaspoon dried tarragon (I subbed …