Bring lentils and broth to a boil. Cook over medium heat for 15 minutes and set aside. In frying pan, melt butter and saute meat over low heat until it is well browned. Add onions and garlic and saute until the onions are golden brown. Put lentils and broth in a baking dish. Add the meat mixture and remaining ingredients. Stir and cover. Bake at 350 degrees for 1 hour. Serve.