Preheat oven to 350 degrees F.
In a heavy bottomed pan, over medium heat, sauté onion in 1 to 2 tablespoons of water until soft. Add garlic and continue to sauté for 2 minutes.
In a large mixing bowl with a potato masher, combine lentils, rice, tomato paste, salt, pepper, thyme, sage, and parsley. Add the onion and garlic. Mix together. Place mixture into a loaf pan, lined with parchment paper or lightly oiled.
Form into a loaf and bake at 350 degrees for 45 minutes to 1 hour.