Serve this unique side with our Sausage with Sauteed Red Onions and Thyme.
Place medium saucepan over medium heat, and add the olive oil. When hot, add celery, carrots, and shallot, and saute until the chopped shallot is translucent, about 2 minutes. Add the garlic, bay leaf, and lentils, and stir to combine. Add the chicken stock, increase heat to high, and bring to a simmer.
Reduce heat to medium low, simmer for 20 minutes, and add the rosemary. Continue cooking until the lentils are tender, about 10 minutes more. Stir in the salt, pepper, and scallions. Remove the rosemary sprig and bay leaf before serving.